Retired Vikings linebacker Ben Leber is an increasingly visible presence in the Twin Cities and nationally. Between public speaking, regular appearances on Vikings broadcasts and KFAN Radio, and a growing portfolio of Fox Sports college football telecasts around the country, the telegenic and articulate 10-year NFL veteran is growing a noteworthy brand. In a town where the leading sports pundits and insiders are mostly graying vintage figures, Leber is a new-ish face to keep an eye on.