I got Colloseum on release day, and I STILL haven't finished it! *L* I just got to a point where I said "Y'know, this really isn't all that much FUN." I quit for a while, picked it back up and got as far as what I'm assuming is the final level (where you face all the bosses again) and I just did not want to play anymore. The battles just seem like they take forever, and the Pokemon level up at such a slow pace, I simply got bored. Which is a shame. It has so much potential, if they'd just liven it up a bit.
Oh, and never been a fan of the "Snag" move.