A 104 yard kickoff return for a TD to open a MNF game opens eyes, but besides that play how has he been doing? According to Football Outsiders:

San Francisco's kickoff returns have been worth 10.7 points in estimated field position compared to the NFL average, more than any team except Cleveland.

So, the 49ers return game has been even better than Chicago? I know Hester missed a game or two, but wow. I didn't think Rossum would offer much when he was signed this off season. I thought he'd be decent and able to hang on to the ball, but he's old. Instead, he's been a bright spot, giving the offense decent field position at worst and even contributing on offense occaisionally, well, one play, but it was a touch down.