#2
Hey, what's up Admiral? Ackbar rocks.

No examples really come to mind... metric modulation's a very odd concept. The example Wikipedia lists (I know, I'm a Wiki-whore) is Elliott Carter's Eight Etudes and a Fantasy for woodwind quartet (1950), Fantasy, mm. 16-17. So, erm... if that helps, then there's ONE example. Cripes, I don't know if I know of any more, though. Hope that helps out at least a tiny bit, though.
#3
I've never heard the term in my life, so I did the sensible thing and looked it up. If it is what I think it is, an example would be Money by Pink Floyd. The intro is in either 7/4 or 7/8, depending on who you talk to. Gilmour says it's 7/8, so we'll go with that. In the sax solo section, an eighth note in 7/8 becomes a quarter note in 4/4.

If I think of any other examples, I'll post them.
(Slightly outdated) Electronic and classical compositions by m'self: Check 'em out