Nine Inch Nails should do a Bowie cover album. I know they never will, but it would be amazing. The possibilities are endless. If The Flaming Lips can do Dark Side of the Moon and Sgt. Peppers in their entirety, why not?
Here would be my dream NIN Bowie cover album, songs that I think Trent could pull off vocally and that would fit NIN thematically:
Subterraneans
Scary Monsters
I'm Deranged
Station to Station
Blackstar
If you can see me
I Would Be Your Slave
I'm Afraid of Americans
Always Crashing in the Same Car
I Can't Give Everything Away
Time