There are a few people here who really believe in and love to play teh Jaenisch gambit. I've only had limited experience with it, and always from the white side, but I think it's harmless and plays into exactly the kind of game I like to have as white.
Edit: If you want to look for any info on the Jaenisch gambit, you may have better luck looking under "halibut gambit"
Anyone thought of b5!...? It's called the Jaenisch Gambit....and it isn't perfectly silly. It scores quite well too. Has an element of surprise and can bring about a lead in development. That's all I'm saying. Feedback is welcome :)