As a matter of fact I do!
Mussels are one of those rare exceptions in the bivalve world of a mollusk that can be frozen without losing it's flavor or texture. Now, this is not to say that fresh aren't better...they are!...but the frozen ones are pretty darn tasty and when I need my mussel fix and trhe fresh just aren't available, I happily reach for the frozen. So throw them in a pot with some white wine, a little garlic, some red pepper and some Italian flat leaf parsley (the other kind is like eating fresh cut grass) and pass me a dern fork!