Which bookmarklets do you use on regular basis ?

eporue writes: "I use daily the following bookmarklets:

• Co.mments, to keep track of conversations : the bookmarklet can be found here.

• Subscribe to bloglines: — the bookmarklet can be found here.

• Toread, to email copies of web pages.

• Playtagger from delicious, to play MP3s without leaving the page. The bookmarklet can be found here.

What other bookmarklets do your use on regular basis ??"