"James Sweet" hath wroth:

They will blow up if connected backwards to a source of sufficiently high
current, but to blow up in normal use would be extremely unusual,

Yeah. That's lots of fun. See videos at:
http://www.youtube.com/results?search_query=capacitor+exploding&search=Se arch
Seems to be a fun thing to do. I couldn't find a video of a large
electrolytic explosion, just the small ones.

I'd be
much more worried about a meteorite crashing through your roof to kill you
in your sleep than that.

Start worrying:
http://news.bbc.co.uk/1/hi/sci/tech/2218755.stm
http://www.xenophilia.com/zb0005.htm

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558