If you happen to be in Paris during 2014-03-05 and 2014-07-21 I recommend to check out exposition "Bill Viola". It's the first exhibition with video "objects" only that I have been to. After a number of less exciting things to see, the exhibition became both interesting and relaxing at the same time. After leaving, everything I saw felt like a video installation to me...

This video gives a good overview of what to expect: Bill Viola : l'exposition

And this is (a small mid-time excerpt of) a piece that I really liked: The Encounter - Bill Viola