"Netscape 3.0 Now!"
A recent mosaic of Web 2.0 logos prompted me to dust off my 1996-1999 collection of 88x31 buttons. Some are classics and some forgettable (I'd certainly forgotten about the "Now!" urgency of most of the buttons).
The originals are mostly animated GIFs, which I've restored to their original blinking glory here on my website, complete with my 1997-era crappy html and plenty of broken links to defunct companies.
update: boingboing'ed here. :)