It's called Gurren Lagann(possibly greatest mecha series of all time). It is the most over the top, nonsensical, and by far craziest anime i've ever seen. I just finished the last episode and wow. That robot is the biggest freaking robot of all time. No contest. It's a fun anime don't exepect anything deep philosophicaly more emotionally. and you will see a lot of drills. I it has really good animation, addictive music ( the song won't leave >.>), and a lovable cast of charecters(which the creators had the balls to kill some off). You might find yourself hating it or loving it. There isn't really a middle ground. If you can handle a nonsensical story line than i suggest you to watch it. I also don't like the mecha designs that much but there different from you're usual mechas so I'll give them that. I also don't like mecha series in general. It's also one of those two animes that has a great dub. If you also want to know who created his it is from the guy who directed FLCL episode 5 and some others but he was not the main director. It's got heart.
SONG THAT WILL NOT LEAVE MY HEAD
http://www.youtube.com/watch?v=ODb7fZFPTPY