Why do football commentators praise Joseph Addai?

I've watched every colts game televised since 2002, and I see absolutely nothing exciting about Addai. During his first season with the Colts, he promised to be a winning running back, but alas, just like his predecessors he appears to be a bit lazy when rushing the line. This RB, like all the "star" RB's the Colts have had in the past 10 years appears to just not have the heart and will to charge that line and keep on chuggin'! One would think that with all the money he's being paid, he would put forth at least a bit of effort!