S3, E23: Dr. Liam Neesam, the new professor, is causing quite a stir on campus. Dick thinks hes a hot shot but cant help being fascinated, because Neesams a lot like him, pompous and completely self-absorbed. Sally suddenly finds herself dateless and decides that she and Don should get back together, but Don is mysteriously unavailable, and women at Globeys Bar and Grille have all begun gushing over him. Sallys really baffled when she hears one of the women refer to Don as Donnie Orvellini. Neesam proves his superiority to Dick in the classroom, on the golf course, in the kitchen and in the pub at darts, but when he seduces Mary its the last straw, and Dick finally figures out Neesams true identity. Sally learns that Don has become Rutherfords king of karaoke; shes intimidated, but confronts Don who tells her that music is his life now. Sally says she wants to be part of that life, and they sing a duet. And Dick confronts Neesam who says he knows Neesams an alien. Dick is about to reveal that he too is an extraterrestrial until Neesam says hed planned to destroy the planet until he met Dick who seemed intelligent enough to justify saving it. Neesam uses a device on Dick to make him forget their conversation; its supposed to melt about half the human brain, but Dick is safe since he isnt human.