Extremely LONG post. Edited synopsis's and made them all about 1/2 their original sizes.
(# of episodes) Series Title
Genre / Theme
Synopsis.
(Movie) REDLINE
Racing, action (PS: Gurren Lagann meets Speed Racer. Very over-the-top. Completely hand-drawn over 7 years - best animation I've EVER seen.)
The biggest race of the universe, REDLINE takes place every 5 years. This year's host, Roboworld will throw everything they got to make sure the race doesn't happen.
(50) Code Geass / Code Geass R2
Mecha, alternate history, action, psychological, thriller
Japan has been taken over by the Brittanian Empire, and is now Area 11. This is the story of a resistance to take Japan back, but with an incredible plot. Twists nearly every episode, incredibly entertaining to watch. If you don't like deep plot, this isn't for you.
(24) Romeo x Juliet
Romance
An anime take on Shakespeare's Romeo and Juliet - of lovers from opposing families. Beautiful animation, likable characters and a charming love story.
(50) Eureka 7
Romance, action, mecha
The grandson of a mechanic and son of the legendary Adroc Thurston, Renton is a 14-year old loser in a small town. He wants to be a reffer (air surfing) someday, but has no way of leaving. One day a girl shows up in a LFO (mecha) and needs some kind of repair work. Renton takes the opportunity to go with this girl and lives in Gekkostate - a group of pro reffers and mercenaries. Heavy on the love themes. (Absolutely adore Dominic x Anemone towards the end of the series.)
(64) Fullmetal Alchemist: Brotherhood
Action, adventure
A remake of Fullmetal Alchemist, this time following the manga page by page. Two brothers use their skill in alchemy to try and find a way to restore their bodies. An incredible adventure story with an amazing plot. Not the most complex story, but definitely one of the best I've ever seen. The conclusion of the series is hands-down my favorite.
(37) Death Note
Physiological, thriller, mystery
Yagami Light is an ace student who finds the "Death Note": a notebook with the power to kill people in any way he desires. With the Death Note in hand, Light decides to create his perfect world, without crime or criminals. However, when criminals start dropping dead one by one, the authorites send detective L to track down the killer, and a battle of wits, deception and logic ensues... Very plot-heavy, lots of twists. One of the best shows I've seen to date, though after the first half I really lost interest.
(13) Spice and Wolf
Romance
Lawrence is a traveling merchant in Europe during the Middle Ages. He runs into Horo, a pagan wolf deity of the harvest. Horo wishes to travel to her homeland and the two proceed to journey together. A sweet, witty story that's fairly short. One of the more accurate depictions of the Middle Ages I've seen yet, (aside from details like Horo being a wolf-goddess).
(26) Darker Than Black (Not a huge fan of season 2)
Mystery, action, thriller
After the appearance of "Hell's Gate" in Tokyo, people called "contractors" appeared. They lack conscience but posses various supernatural powers. Secret to most of the public, they are hired by governments and syndicates to do their bidding. This follows Hei, the "Black Reaper." One of the most feared, and most mysterious contractors out there.
(27) Tengen Toppa Gurren Lagann
Action, adventure, comedy, mecha
Known for its humor and being so over-the-top, Gurren Laggan follows Simon and friends as they try to fight off the Beastmen on the surface world. Second half of the season would be spoilers, so I'm going to stop here, but it's worth the watch.
(11 + 2 movies) Eden of the East
Thriller, comedy, mystery
A man wakes up nude with nothing but a cell phone in front of the White House. The phone has 100 million yen on it and records 11(?) other people with similar phones. From the get-go this is a hilarious and very interesting series. With 11 episodes my ONLY wish is that it was longer - the humor, plot, EVERYTHING about this series was great - even including the American cop's accent was stereotypicaly spot-on.
(25) Toradora!
Slice of life, romance
Ryuji is an intimidating student, though gentle at heart. He has a crush on Minori, but meets a small girl with a brutal personality named Taiga. (AKA Palm-Top Tiger.) Taiga agrees to help Ryuji with his love interest as long as he helps with hers. Surprisingly sweet story - have a soft spot for Taiga in this show.
(50) Full Metal Panic! / Fullmetal Panic? Fumoffu / Fullmetal Panic! The Second Raid
Mecha, romance, mystery, comedy, action
Sousuke, a 17-year old military specialist is assigned to protect Kaname. He has never lived in "normal" society and has an extremely hard time trusting people or adjusting. Thought it was a delightful series, and Fumoffu has some of the funniest moments in anime history in my books.
(14) The Melancholy of Haruhi Suzumiya
Comedy, slice of life
On the first day of high school a girl named Haruhi introduces herself as having "no interest in ordinary humans". She asks for any aliens, time travelers, sliders or espers to join her. Watching her weird behaviour is Kyon who sits in front of Haruhi and is the only person who talks to her. When Kyon comments about Haruhi's joining every club in school and then quitting he unwittingly gives Haruhi an idea to start her own after school club. Thereafter Kyon and several others find themselves literally dragged into the S.O.S. Brigade.