This is a very good Colin Firth flick.
It's a nicely put together film, with a meaningful story portrayed strongly. Firth gives a big performance in the lead role, with him being the only standout performer - though the supporting trio of Julianne Moore, Nicholas Hoult and Matthew Goode are all solid co-stars. Jon Hamm, meanwhile, has a cameo; when I heard it, I actually thought it was Armie Hammer.
My only criticism is the (intentional, of course) colour saturation, which kinda made a few of the scenes look cheap (if still minorly effective) in my opinion. That's nothing major though, as I enjoyed watching this 2009 release.