i went to Cinec 2010 had my 550D arround … did not shoot too much with it though … too much great other gear to get hands on! 
… i did meet one of my twitter buddy @Sascha_Plagge …and had a great time at the show so did he (i guess) see for your self …
a lil written review is comming soon too … stay tuned
you also should watch my lil RED EPIC experience at cinec 2010: vimeo.com/15112636
the stuff i most liked was / is the Genus DSLR shoulder rig & Mattebox and the new ABC DSLR Light Jib as well as the new lil Marshall 5” LCD and of course the ARRI ALEXA 
some more nice links & updates here
Tags: 550D, ABC DSLR Light Jib, ARRI ALEXA, Cinec 2010, CineDLSR, cmotion, DSLR shoulder rig, Genus, HDDSLR, HDSLR, Marshall LCD, RED EPIC, Sachtler
Good stuff. Nice music – what was that?