"Andrew Lloyd Webber's new musicial brought the house down" - this means that the musicial was success or not?
"The TV pictures really brought home to me the horrors of the famine" - The pictures made me realize fully the horrors of the famine or they clearly showed the horrors of the famine?

(1) Yes, a success, and I have answered this question at greater length elsewhere.

(2) Yes.

To save MM the bother, he answered a similar question [url="http://www.EnglishForward.com/ShowPost.aspx?PostID=47271 "]here[/url].