Take 1:
http://www.google.com/logos/valentines09.gif

Take 2:
http://www.google.com/logos/valentines09v2.gif

Take 1 is better.

There are localized versions again and alt text of the Doodle says "Hyvää Ystävänpäivää!" etc.

http://www.google.fi/logos/valentines09v2.gif

youtube:
http://s.ytimg.com/yt/img/logo-valentinesday-vfl78111.png

Tonight at midnight Google changed for some minutes his logo with the unix time 1234567890 :) hell I didn't take a screenshot

At 2009-02-13 23:31:30 UTC the unix time in decimal was 1234567890.
What is your time zone?

thread with doodle:
http://blogoscoped.com/forum/150485.html

wiki on unix time:
http://en.wikipedia.org/wiki/Unix_time

Yahoo.com has Flash-based version at their home page
http://www.yahoo.com/

Ask search engine has an extremely large (but funny when combined to search box) background image:
http://sp.ask.com/sh/i/h/valentines/hpto_home_vday09_02.jpg

Or Live.com,

http://www.websonic.nl/nieuws/022009/images/doodle_valentijnsdag_live_2009.jpg

The first Google doodle is better.. :)

Thanks WebSonic.nl, the Live.com picture was not live :) yet when checking on Saturday

It was live.

here the image:
http://www.live.com/hps/Seals_EN-US1998021014.jpg

Thanks. I was redirected to local page and I had no time to test with Safari or something (different language setting in use).