IMO: Incredibly boring, incredibly dumb. There is one tactical move that the so-called strategic genius makes that basically relies on the enemy thinking he's a tactical genius, so the incredibly stupid, suicidal action he's taking is actually some kind of incredibly smart move, and so they just sit there stunned instead of taking action. (The "Left Flank" stuff for those who've seen the film.)
Dumb, dumb, dumb, dumb. At least IMO.
The rest of them, though, I can't comment on. I am intrigued by Kare Kano (being a big shojo fan) and FLCL, as well as Excel Saga.