Gurren Lagann anime is too good that I finished half of the season in a day. In Japan it is known as Tengen Toppa Gurren Lagann, "Heavenly Breakthrough Gurren Lagann" as alternate title. This is a mecha anime, a fictional story where the humans are forced to stay under the earth's surface. Simon, a 14yr old kid is respected as the best digger in the village. One day while digging he found a spiral piece and a mecha head, the spiral piece serves as the key to activate the head. He named it "Lagann". With Kamina's courage, together they made it up to the surface and found that there are other mechas used by beastmen called "Gunmen". During a fight, Kamina captures the Gunmen and pilot it himself and he named it "Gurren". Of all the mecha anime I have watched, this anime is one that I would best recommend. This was released in TV Tokyo in 2007.
My personal rate: 9/10

I have finished watching Mobile Suit Gundam 00 series a week ago. This is a two season anime and a movie sequel to be release in September 2010. This is directed by Seiji Mizushima and written by Yōsuke Kuroda. The series is about the celestial being, a private paramilitary force that wish to eradicate war in the world using their mobile suits, Gundam. Sunrise really pulled it off with a very good story and soundtrack too. Sugoii.
The opening theme for episodes 1-13 is "DAYBREAK'S BELL" by L'arc~en~Ciel and The Brilliant Green's "Ash Like Snow" in episodes 14-25, which are absolutely great by the way.

They have released the movie trailer (Oh I am so excited!)