Entertaining.  I knew very little about it and have not read the comic, but I did enjoy it.  Clearly comic-based at times, but that’s not a negative.  Not the kid-friendly kind of comic feel though, it is rated R for a reason.  One or two moments may have been slightly overkill.  Great cast that put on a good show, you can’t go wrong with the likes of Michael Cain, Mark Strong and Colin Firth.  The gadgets were sweet and the references to other spy movies were entertaining.  Overall it was fairly humorous, entertaining and enjoyable.  I recommend it as long as you aren’t too sensitive to violence and language.