I didn't like it either, I even have one of the PS1 copies and I feel the same way about that one as well. People love the series though, don't really know why except for how pretty it is, but I guess it's just me and you.
I'd also like to add that I got Dead Nation from the welcome back package and I finished the whole game, it was pretty great.
Bet with Conegamer and AussieGecko that the PS3 will have more exclusives in 2011 than the Wii or 360... or something.