Following his retirement, Peirson became a prominent broadcast color analyst for the Bruins, first on WBZ radio with Fred Cusick -- with whom as a player he had done a TV demonstration during one of CBS-TV's short-lived weekly NHL telecasts—then on WSBK television, initially with Don Earle and then for many years with Cusick, who had moved from radio to TV.
From 1990–1999, Heinsohn was the Celtics' road play-by-play man on WFXT, WSBK and WABU.
Frederick Michael Cusick (November 7, 1918 - September 15, 2009) was an American ice hockey broadcaster who served as the Boston Bruins play-by-play announcer from 1971 until 1997 on WSBK-TV (Channel 38) in Boston, and from 1984 until 1995 on NESN.
Outside of UPN programming, the lineup was filled with double runs and failed syndicated programming from WXXA, older films, and an assortment of sporting events including New York Yankees games (from WNYW, then WCBS) and Boston Bruins games from WSBK.