Both films featured Patrick Stewart, and both films featured an almost-sex scene where the person on top turned (can't remember if ST:N employed morphing) into someone else.
Star Trek: Nemesis observations:
1. The mini-Picard looked too much like a cross between Dr Evil and the Smallville version of Lex Luthor for comfort.
2. Afterward I felt a lot better about my driving abilities, oddly.
3. It's not explained why Picard went bald so young. (of course, in the flashbacks in the series he wasn't bald as a cadet, etc, etc)
4. The SFX were exceptional, and the movie as a whole was the best Trek movie since First Contact.
X Men 2
The only gripe I had with this is the bit where Wolverine gets shot. The guy has an Adamantium skull - the bullet should have either rebounded or flattened out.
Other than that, a great movie. Especially liked the little touches - the cameo of Dr Henry McCoy on TV, Colossus, etc...
Looking forward to X Men 3 already!