Do we have any on the forum? The one below is an interesting (hour) repeater from Ulysse Nardin. I've seen a similar one from the same brand called the "Safari".
Which one is your favorite repeater?
http://www.youtube.com/watch?v=JhJJR7E7920
Bored of SC now?
Sorry, couldnt resist. Glad to see you contributing in WT :-)
As for minute repeaters - the only one I had was my Breitling Aerospace. An utterly useless function, to my mind, on such a watch.
On more expensive watches, it's equally useless, but a great way to show off great watchmaking (and to show that you have an expensive watch!)