I expect it's an enjoyable film for those going in with no UNCLE preconceptions, if you like generic thrillers, which I don't. Then again, some fen have quite enjoyed it, so even if you have some knowledge of UNCLE, it could still be likable.

Strictly personally, I knew with this one, based only on previews, as I knew when I saw the previews for the Sherlock Holmes "franchise," that it wasn't anything that spoke to me as a person who loved the source material. That's not a quality judgment (although in a way I guess it is, because it means I don't think Guy Ritchie knows how to make a period film. At. All.) - millions of people loved the Holmes flicks, so clearly they're solidly made movies, and of course Robert Downey Jr. is eminently watchable in pretty much anything.