Random Acts of Thursday - (not so) Free Samples

Samples?  Yes, please.  My grocery store (curse upon my life though it is) has started passing out samples of brownies on my last few visits.  Doesn't make up for them raising all of their prices, but still - free brownies.  Anyhow, it got me to thinking and I thought I'd regale you all with a little quiz about samples.  (You're all excited and tingly, I know.)

Below are songs that were sampled into other music, name the artist and song.

It's a hard-knock life (The Cast of 'Annie')
Under Pressure (Queen/David Bowie)
The Ocean (Led Zepplin)
Good Times (Chic)
We Will Rock You (Queen)
Thank You (Dido)
I'll Take You There (The Staple Singers)
I'm a Man (Bo Diddley)

The following films are sampled in song as well.  Name the artist and song.

Full Metal Jacket
Performance
Young Guns
Animal House

Even Mr. Spock got sampled!  Name the song.  You know you know it.

The following bands and artists are mentioned by other bands in their songs.  Name the song where each of these artists is referenced:

Anthrax
T Rex
Falco
Moby
The Beach Boys
Wolfgang Amadeus Mozart
Jimmy Page

Bonus question: Why bother to sample when you're great on your own?  Name three bands that mention themselves in their song titles.

As usual, you don't win anything, except maybe some fine musical trivia knowledge to try out on your friends and family.  Aren't you lucky?