Lis and I were just discussing jobs Rick Astley would be terrible for

[xiphias]

Belaying partner in rock climbing
Racing on a track
Pastry chef
Edited to add: thought of another one: valedictorian
Edited to add again: Current list
Clerk at a video store that carries Pixar movies
Belaying partner
Track and field
Pastry chef
Blues singer
Valedictorian
Fiction author
Deep-tissue massage therapist