I just installed CS5 and was able to play with Premiere Pro and After Effects. Before I was debating on getting an iMac 27 i7 or a Mac Pro. Well for the money, the iMac i7 does everything I ask it to. Computers can still get faster as this thing is fast, but it's not instant...meaning, it still takes time to render. But to give you an idea...on my 13.3 Macbook, a 1 hour render takes about 10 minutes on the i7. The interesting thing is playing Starcraft 2...I don't hear the iMac fans at all...however, rendering HD video puts the CPU to work. I only have 8GB of RAM now and it seems responsive, but I can guarantee for these kinds of video editing programs, the more RAM the merrier. I order 8GB more RAM today and I will have a total of 12GB (I stole 4GB out of my Macbook temporarily). I can certainly say for anyone thinking about iMac for video editing...it definitely can get the job done. If money however is not an issue...go with the Mac Pro...the extra hard drives make a difference. For those on a budget...like me...this is the top of the line product for a prosumer. It's hard to beat the price for the big monitor and i7 chip. BTW...even 27 isn't enough... I got an external 24 next to it and in fact... running both After Effects and Premiere Pro...it would not be out of the question to have a 3rd monitor for web browsing or have a document to look at or something. Let's all hope Adobe supports our video cards in the future.