The PS4 looks similar to a PS2 to me, particularly when standing vertically. Simple but classy 8)
Actually I couldn't give a monkeys what the PS4 looks like. I do like the look of the Xbox One better, BUT with all the restrictions and hoop jumping that MIcrosoft have forced on the consumer then that's a deal breaker for me. I have always bought both Sony and Microsoft consoles each generation (and sometimes Nintendo as well), but unless microsoft do a lot of backtracking (which I don't think will be possible), then its PS4 only for me this Gen.
Looking at the piccys and E3 conference it looks like the PS4 is quite tiny as well, anyone have any dimensions listed yet?