I'm not sure why this is happening, since I've done this before, but my entire style.css file is showing up in the theme selector. http://i38.tinypic.com/20rr78p.png
My stylesheet can be found at http://www.mildlyhotpeppers.com/comics/wp-content/themes/mhp_2_2/style.css.
The header starts like this:
Has this happened to anyone?
Nevermind, I just copied and pasted the stylesheet from the previous version of the theme - seems like the header was the same, but I must have forgotten to close a comment somewhere down the line.