I have added the "On This Day" feed from reference.com to my iGoogle page, and everyday (everyday that i remember to check it) that tells me something that happened on that day. Also, each day they give you a stark reminder of how time passes:

Today is Tuesday, April 8, 2008. This is the 99th day of the year, with 267 days remaining in 2008.

What am I to do!?