TRobot's post links to cool flash animations thread.

[TRobot]

do as the title say's-

http://www.deviantart.com/view/22594104/ -by far my favorite flash animated cartoon.(best animaton and writing)

[SirLemming]

You took mine!

[Jon Hanson]

Merry Melony (http://www.newgrounds.com/portal/view/212855) is awesome.

[TRobot]

http://http://www.abacuscreativemanagement.com/artists/trussell/videos/video3.htm


-coolest animated music video ever!

[K-S-O]

Banana Phone! (http://i3.photobucket.com/albums/y54/kso514/osakaphone.swf)

[Patchwork]

As comedy goes, for a long time, I've been a big fan of Tiny Plaid Ninjas (http://www.spinnerdisc.com/plaid_ep2.html)
And if you're looking for somethhing a bit more serious, I highly recomend The Clown Killer (http://www.matazone.co.uk/animpages/halloween_special_2002.html) and The Composer (http://www.newgrounds.com/portal/view/226149)

[mojokingbee1]

Mine's a tie between B. Happy (http://cartoonnetwork.com.au/asp/webpt/o_bhappy.asp), (Notice my avatar?) and Retarded Animal Babies (http://www.newgrounds.com/collection/retardedanimalbabies.html). (WARNING: "Retarded Animal Babies" is EXTREMELY MATURE!)

[mojokingbee1]

But my No.1 pick is Space Tree (http://spacetree.keentoons.com).

My fave episode: http://spacetree.keentoons.com/spacetree13.html

[Samurai]

Mortal Kombat vs. SF Flash (although it's more videogame related than animation, but still pretty cool): http://www.funnyheck.com/flash_cartoon/mkvssf2.html