Collins guest-starred in dozens of television shows beginning in the 1960s, including The Virginian, Hawaii Five-O, The Six Million Dollar Man, Alf, The Love Boat, The Bionic Woman , Charlie's Angels, Roots, Gimme A Break!, Friends, "Yes, Dear", JAG, and most recently Dirty Sexy Money. He appeared in the episode "You're Not Alone" from the 1977 anthology series Quinn Martin's Tales of the Unexpected (known in the United Kingdom as Twist in the Tale).