The show fools around a bit at the start, jumps the shark (For a reason I won't spoil) in like 2 episodes, then gets very enjoyable the rest of the way through.
Also, old Adult Swim shows were great. People just realize now that the anime industry is just like any other, filled with generic trite etc. The language barrier was like a filtering process, but now that anime is more popular around here we take the good and the bad.
There was still decent-good stuff like Ghost in the Shell, Read Or Die, Fullmetal, Trigun, Cowboy Bebop, Escaflowne, Outlaw Star, Case Closed, Lupin, Champloo, Hakusho, FLCL, Code Geass...the list goes on.
Apparently if America gets an anime its bad though. Also, I don't classify "Mechs" as a genre in itself, simply a plot device people like to discriminate against due to general distaste of their appearance or more likely disinterest with previous mech-based shows.
Edit: Lucky Star made me bored and hungry at the same time. References can honestly only be so funny. PaniPoni Dash does the whole parody thing better imo.
Edit2: Urusei Yatsura makes a bunch of stuff look unfunny in comparison anyways. :3