Tie-ins between departments are a good thing. The PS3/TV bestbuy deals sold rather well and I hope this works out well for Sony. When you have such an extensive hardware footprint that Sony has, it only makes sense to link the two (or three or however many)
It might be a bit late though, since this should have happened much earlier in the psp's lifecycle. Maybe the new PSP2 with a phone option? Sounds good to me.