A bundle of beautiful timelines posted over at the Dave Rumsey Map Collection. Many of these are featured and discussed in Cartographies of Time, one of my favorite books I read last year.
Making timelines* seems to be one of those things that we can do on computers very easily now, using gestures and drag-and-drop, instead of the nightmare interface of something like this.
I wanted to add some more to this post, so here's some other TIMELINE links that I came across in about 10 minutes of searching. I haven't done in-depth research or anything. Also -- if you're searching for "timeline" on google you'll want to add "-facebook," to filter out a billion mentions of Facebook's (badly designed) timeline feature.
BeeDocs Timeline App
Verite Timeline App (play with the coal industry power play timeline)
SIMILE Timeline Widget
Wikipedia list of timelines
Hyperhistory (oldstyle, charming)
Add more in comments if you want. There's gotta be some huge, Wikipedia-type timeline somewhere on the web, right? I thought I saw something like that once, but I couldn't find it just now.
*...and mindmaps, 3D environments, nested documents, etc....
Here's an interactive timeline thing called "Here is Today."