Disco Stu? That's hilarious. ("Did you know that disco record sales were up 400% for the year ending 1976? If these trends continue... Aay!"). I hope they give him a cool album cover to hold. It's minifigs like these I like. I agree with Inky: I also am not particularly into the wrestler, weight lifter, surfer, and Pamela type of figs. Some of my favorite ones include the clown, cheerleader, Disco Stu, and the mime. The skier from series 2 looks surprisingly good too.
And these don't really look like the final designs: too many common pieces. Two of the same common hairpieces, the cop's helmet, the absence of a sombrero on the Mexican... The 2 x 2 round with one centered stud for the weight lifter looks like a part than can make it's entry in Lego's regular lines pretty soon.
The $1.99 looks confirmed though. I hope this also translates into lower than expected euro-prices.