I'm not into this "digital hub" thing at all; I barely watch any TV and I listen to music through speakers whilst on the computer, otherwise on the iPod.
For me, the "which console" question is a no-brainer. I've got GC games which I still like playing (and, in the case of NFS:MW, haven't yet finished) and I like the tiny form factor.
And the cost. \ufffd179 versus the far side of \ufffd400 for the others.
Blu-Ray is an irrelevance to me, given that I haven't even watched all the DVDs in the house yet and don't have an HD TV (and won't for many years to come).
DVD will suffice for yonks yet.