I don't think I got good recommendations (based on the ones I've seen) but then again I have peculiar tastes; I think Lilo and Stich is a great movie and se7en is a meh movie (and I can argue why).
well, I've seen it twice and it's a fine movie but I don't see there's anything special about it, the serial killer using a theme has been done a million times, the only twist is the motivation/endgame of the killer in this case. Acting is good and overall the movie is entertaining but I fail to see anything other than a build-up for the grand finale (goo but not mind-blowing or totally unexpected), it's a 3.5/5 or 4/5 for me, still can't see why it consistently shows up in top movie listings.
OTOH I haven't been wowed by a movie since The Matrix so I'm probably just an old man yelling at the clouds.
I challenge you.