Having been used to previewing my clips from my Canon HFS100 camcorder on my PS3 from the card,i was disapointed when trying to do the same from the T2i.I guess that the data rate is to much for the PS3 to handle,Tried using Quicktime Pro 'passthrough unwrap to MP4 format,but no joy so far.Any thoughts welcome.

If you can try the free Mpeg streamclip (http://www.squared5.com/) you can easily export to another resolution and codec. But this needs more steps than just putting in the card.