Synopsis: Geordi and Ro learn that invisibility turns out not to be such a great trait to have.
Memory Alpha Summary: Erased…from existence!
Review: If you turn your brain off, Geordi and Ro’s predicament is quite fun. After all, the whole “Are we dead?” thing Ro ponders is kind of lame. Are they hungry? Are their bladders full? Also, why can they walk through walls, desks, and people, but their feet stay grounded to floors? It makes very little sense, but the special effects are awesome. The funeral preparations are funny. The action between Ro and the Romulan is good television.
Death By Troggles 
I actually just watched this one the other day. I liked this one a lot – not quite as much as the other one with a very similar plotline, but a lot, anyway.
what’s the other one?
Timescape, I think. I guess they’re not really all that similar, but they’re forever linked in my mind.