I confess I'm biased here, but i find the Obama video Chrsitmas card much less calculating than Mike Huckabee's. Huckabee seems desinged to trade on the "War on Christmas" mentality and send a message to his would be followers that he's not only running for President but that Jesus is the Master. It's a message not of unity but one designed to set him apart as the truly Christian candidate.
Obama on the other hand has a nice sentiment expressed focused on what unites us as a people. It brings in the whole family as well. Nice touch. Like I said, I'm biased, but I like the video -- check it out: