With no Nadal, it's between Federer and Murray. Personally, I think Federer will beat Sampras' record by taking another Wimbledon title.
He's currently up two sets to love against Yen-Hsun Lu, and dominating in the third set.
James Blake is out in the first round, which is a bit of a shock, as he seemed a solid bet to get to the Semi Finals. He lost to Andreas Seppi.