Just thought I'd pass this on. I bought my son a 27" iMac for xmas and plugged his PS3 into the Imac using the following product from Atlona. This has worked brilliantly, the quality of the picture and sound is great. It switches easily back and fwd between the PS3 and the iMac. Just hope his homework doesn't suffer otherwise I'll have a ps3 and a displayport switcher for sale
http://www.atlona.com/ATLONA-HDMI-MINI-DISPLAYPORT-TO-MINI-DISPLAYPORT-SCALER-AND-SWITCHER.html
http://www.atlona.com/ATLONA-HDMI-MINI-DISPLAYPORT-TO-MINI-DISPLAYPORT-SCALER-AND-SWITCHER.html