According to a contact at Pacific Life, the following are the air dates for the ad featuring Jay & Pease Glaser and Jim Korkosz & Brandon Wallace on I20's.

Australian Open (on ESPN and ESPN2 through 1/29)
Pacific Life Open (on ESPN and ESPN2 March 14-21)
Pacfic Life Pac-10 Men's Basketball Tournament (Fox Sports March 11-12, CBS March 13)