|Canadian David Foster has created one of the odder niches in the pop music world; as a producer, he's worked with an almost impossible array of artists; as a writer, he's penned some of the more haunting Top 10 love songs; as a performing artist, he was a two-time one-hit wonder, scaling the charts in 1973 with the breezy "Wildfire," and again (solo) in 1985, with the easy-listening instrumental "Love Theme From `St. Elmo's Fire'." In 2008, an astonishing lineup of million-selling musicians gathered to show their love on the PBS special HIT MAN. The gala features Foster holding court on piano and as emcee, opening with his mellow `80s hit, introducing friends like Kenny G and Celine Dion. Rising Filipina singer-star Charice hits a high note on her stirring rendition of songs Foster produced for Whitney Houston. Foster's 1980s association with Chicago is represented in medley form, with Peter Cetera dropping by to perform a trifecta of `80s hits. Overall, it's a fitting feting for an essential pop figure.