Someone on the f-list was talking about this a while back, and I can't remember who it was. Sorry! Anyway, I found this today and thought it might be helpful. It has some good examples of how to show not tell. And whoops! I've been doing some of the no-nos listed here. *cringes* I found it very helpful and will be sure to use some of these tips in my next story.
http://foremostpress.com/authors/articles/show_not_tell.html