It's no secret that I love the Internet Archive and the Wayback Machine. It's one of the best resources on the web for research and preserving information. While it grabs a lot of material with its wide crawls, using Alexa's data, there are some URLs that it doesn't find right away, and some updates that it misses between crawls. To help with this, I made a bookmarklet to to quickly capture any URL and save it in the Wayback Machine as it currently is. Save it to your bookmarks and then click it to save the page your currently browsing.
Bookmark this link: Wayback Bookmarklet.
Try it out on your favorite page (or this one!)
For the up-to-date and complete list of bookmarklets, including the Master Bookmarklet, see here.