Here are some other ideas for bloggers...
Theme Thursday: This is one of my favorite blog meme sites... every Thursday they provide a new theme and ask you to post a photograph that relates to it. http://www.themethursday.com/
Blog Ideas: When I get really stuck, this site is the first place I look. http://www.blogideas.com/
The Daily Meme: Comprehensive meme registry for every day of the week. http://thedailymeme.com/
The Memes List: Stuck for an entry? Here's a nifty list for every day of the week! http://www.iampariah.com/projects/memeslist.php
Phototime Tuesday: Another photo theme site. http://salascove.com/phototime.html
Thursday Threesome: A clever 3-question weekly meme. http://www.othersideofglenroad.org/backporch/
3X Thursday: Another 3-question weekly. http://squeeek.com/freak/3xThursday.html
I'll be adding more ideas as I run across them. Have a suggestion? Feel free to send me an email.