Timelines are great. Let’s look at some.

Our starting point should of course be wikipedia, so go to the Wikipedia List of themed timelines. Also check out The Center for Cooperative Research History Commons. It’s a great resource and features among others: the Hurricane Katrina timeline and the Complete 911 timeline with 2133 events back as far as 1979.

There’s othertimelines.com, which has loads of alternative histories, and tends to be hilarious. Also fictional is the awesome Timeline of Events in Halflife History, the Futurama Timeline, the timeline for the movie Primer (previously), and THE MOVIE TIMELINE (previously) which assumes that everything that happens in movies is reality.

The Food Timeline goes as far back as 17,000BC and includes references to water and ice, chicken domestication, and lollipops. Theres a link off to The History of Beer at fosters.com.

The incredibly detailed Hobbes’ Internet Timeline v8.1 is jammed with stuff from 1957 to the present about the history of the internet. Related is the Google 20 Year Usenet Timeline (previously). Also nerdy is Boingboing’s timeline of the Sony rootkit debacle. (previously), and the awesome Computer Languages Timeline. The Yahoo Visual Timeline 1996-2006 has screen grabs of the yahoo homepage over the past 10 years which is particularly interesting given its recent revamp. There’s a link off from there to the Google version.

Interactive timelines can be cool:
The History of rock and Roll Visual Timeline.
Evolution / History of the universe.
Another 911 one.

Some others worthy of note:
Wikitimescale.com but it seems to be down at the moment. Keep an eye on this wikipedia entry for details.
The Timeline of Cubism.
History of Psychology Timeline.