Probably my personal favorite of all time.
http://www.youtube.com/watch?v=aDaOgu2CQtIOthers high on the list; at least from a memorable standpoint...
Pearl Jam - Jeremy
White stripes- fell in love with a girl - this was a pretty epic video that was unique and creative and put them on the map.
Extreme - More than Words - i still remember seeing this clip on tv when i was just getting out of diapers
fiona apple - criminal
chili pepper - around the world, under the bridge, give it away
blind melon - no rain
lit - my own worst enemy