My own personal tastes don't really have an effect on whether song is a parody target or not. But having said that, I try to pick songs that I actually like because I realize that I have to live with these songs for a long time, from when I'm working on them in the studio to possibly playing them onstage for the rest of my life. So I try not to pick songs that I know would drive me crazy.
One of the hardest things I've had to deal with in my career is keeping my material topical even though I only release albums every three or four years.
It's hard to really articulate what the parameters are that make one song parody-able and another song not, but if I can come up with a good enough idea for it, I go for it, and if not, then I have to move on.
In the '80s, I was the only game in town, I was the only one getting that kind of exposure in any rotation on MTV. Now with internet culture it seems like everyone is doing music parodies. And they're not all good!
When I started out, I didn't feel like I was really accepted in the music or comedy communities, and I was somewhere on the edge, but now I feel like I'm accepted in both, which is extremely gratifying.
I tend to enunciate pretty well. It's always seemed that my voice is one of those voices that people can recognize pretty easily - which has been a bit of a drawback for some characters because you're supposed to lose yourself in the character, but sometimes people look at a character and go "Oh, it's 'Weird Al.'"