1) On some pages, certain banners overlap areas on the screen. For example, on the main Forums page, the gray "General Discussion and Off-Topic" line might overlap that forum's titles, while the "Top Contributors" line overlaps part of the list of that section in given shows. I thought, at first, that it had to do with stopping the page from loading, fully, or not using a full-screen window, but, that doesn't appear to be the case (i.e., the effect is random).
2) In the forums, users' "signatures" (those parts where users put their own statements and images, such as my da Vinci bon mot) have a lot of blank lines after them. Users not having signatures don't have the blank lines. I presume someone coded it to be a given length, but the blank lines are disruptive, IMHO.
3) The HTML entry widget interrupts typing to the point where I'm forced to use my own text editor, and then copy-and-paste the result, for expedience.
FWIW, I use IE 6.0 and Firefox 2.0.
P.S. I miss the previous version of TV.com, even with all its foibles; cool, though, how TV.com is now advertising on CBS, its new owner! (not sure what that's going to get it, though! pretty expensive ads, no doubt, with, seemingly, negligible return on advertising bucks!)