LOLLYGAG!
My favorite commercials that I personally acted in: There was one brilliant clothing commercial (can't remember the brand). It aired twice, both times on a Grammy awards broadcast if I remember correctly. I was the salesman, and a gorgeous girl was trying on a form-fitting top. Let us say she had, as some wags put it, nice knockers, which were nicely displayed by the form-fitting top. She's looking in the mirror - you can also see me looking at her looking in the mirror. I'm doing one of "my" looks. She then says the company slogan, "Gee, you can feel the fit." I do one of my "eye" things, very subtle, and then say, "I can?" End of commercial. They refused to air it, however, in that form. They made them cut the line, "I can?" So, what you are left with is her saying, "You can feel the fit" and me doing a look and my subtle eye thing. Note to censors: MUCH nastier that way.
Other favorite: RC Cola commercial. I'm on the beach, lying in the sand with a beautiful babe in a bikini. To impress her, I say to my dog, "Murphy, fetch my RC." I then turn my attention back to the babe. Meanwhile, this amazing dog goes and catches several cans of RC (amazing stuff), and brings them back to me. An annoyed musculuar hunk is suddenly standing over me. He looks at Murphy, and says, "Mister, is that your dog?" I do my subtle eye thing and say, "Dog? What dog?"
Two side notes about the above: Instead of dubbing me for the Spanish version of the commercial, I told them I could do a really good accent, and they taught me the lines in Spanish and I did it, and that's the way it aired on the Mexican channels. "Perro? Qual perro?"
Side note two: When it had been airing for about three months, I got a letter from a nice lady, saying her daughter was completely in love with me, and was there any way I could send her a photograph. As I read on, however, I began to realize she was talking about the hunk, not me. I wrote her quite an amusing response, and sent her a photo with a funny inscription. She wrote me back a great note.