<Li> Clark Gregg, as Cameron, Jack's wealthy boyfriend who becomes Grace's client . </Li> <Li> Neil Patrick Harris, as Bill, the leader of a group of so - called "former" lesbians and gays . </Li> <Li> Alex Kapp Horner, as Alice Robinson, one of Grace's former classmates . </Li> <Li> Peter Jacobson, as Paul Budnik, an overbearing guy who Will dates but is more fond of his dog . </Li>

Who played sam truman on will and grace