What TV series included Don Draper from Mad Men as a guest star in its third season?
Generalissimo (30 Rock): "Generalissimo" is the tenth episode of the third season of the American television comedy series "30 Rock". Generalissimo (30 Rock):  Guest stars in "Generalissimo" include Jon Hamm, Salma Hayek, Patrick Heusinger, Matt Lauer, Doug Mand, Greg Tuculescu, and Teresa Yenque. Jon Hamm: Jonathan Daniel Hamm (born March 10, 1971) is an American actor, director, and television producer best known for playing advertising executive Don Draper for the AMC television drama series, "Mad Men" (2007–2015).
30 Rock