Thomas Scot Halpin (February 3, 1954 – February 9, 2008) was an American artist and musician best known for an incident in 1973 when, in the audience at a concert by the Who at the Cow Palace in Daly City, California, he ended up playing drums onstage after the band's drummer Keith Moon passed out mid-show. Halpin's performance won him Rolling Stone's "Pick-Up Player of the Year Award" later that year.