Here are some examples:
The Terminator themed "Skynet" inside
One of my son's favorite comedy routines that he laughs every time he hears it "Dave's Not Here" (Cheech and Chong). To me it is just a dummied down stoner version of Abbott and Costellos witter "Who's On First" routine.
Eagle's "Life In The Fast Lane"
A good present for the obsessed person on your gift list would be I'm Your Most Dangerous Fan Paparazzi/Stalker T-Shirt
The shirts are $12.99 each and if you buy 4, you get the 5th one for free.
Susieqtpies Scraps of Life is hosting a giveaway for a chance for one t-shirt of your choice - for further info click here.
Disclaimer: I am not receiving any compensation for writing this - I just think they are cool.