While Nemesis is a flawed movie...it is still better than Insurrection and Generations. It's really not that far short of First Contact in terms of overall quality and enjoyability. Still, INS and GEN are really weak movies (and FC is not nearly as good as many like to pretend)...so I'm not sure what that's saying.
I voted "good." I enjoyed it when I first watched it, and I still enjoy it from time to time.
Honestly all Nemesis needed to be a decent movie was not to be so damn dark and depressing.
By the end of the movie I always feel like I've been sucker punched in the kidneys (hence only having seen it a couple of times)
J.J. Abrams' Trek OTOH is bright and cheerful, even if some of the stuff happening to the characters isn't (destruction of Vulcan for example was going way too far).
So while I don't go actively watching the nuTrek, I'd watch it if it came up on TV or something.
Nemesis I will avoid like the plague.