cameos you'd like to seen in movies/TV

[El Pollo Guerrera]

I'd like to see in a supernatural-themed series, a detective/team sent to get information about music-based demon/threat/phenomena, and the 'teacher' who mentors the main characters only tells the character(s) that the info source is a musician named "Anthony"... and it turns out to be Tony Iommi, playing himself, but not mentioning he's THAT Tony Iommi.

When it's slow at work, my mind wanders...