I've added a link to the EE Circuits Archive (at washington.edu) that someone forwarded to me; I haven't burrowed too deeply, but from what I saw, there's a lot of sample circuits there. Also, I misattributed Filip G.'s contributions; he was a regular poster on the old newsgroup sci.electronics (now split).
Note: The person named Filip mentioned here does not refer to your head TA, but to Filip M. Gieszczykiewicz, a well-known contributor to the old sci.electronics newsgroup (now split in the news hierarchy). Don't worry, I can't pronounce his last name either.
Take a look at the alt.comp.hardware.homebuilt newsgroup if you have time/interest, but be warned; there's some good signal here mixed in with lots and lots of noise.