I think certain dialogue just lends itself to this sort of speech pattern. Long speeches by an effective speaker just naturally come out this way. Shakespeare uses this to great effect in most of his plays, here's the example from Henry V:
http://www.youtube.com/watch?v=OAvmLDkAgAM
Speaking loudly usually seems to help in getting this type of speech pattern to work, but you can do it softly. Again, Shakespeare, again Branagh, this time Hamlet:
http://www.youtube.com/watch?v=-JD6g...ed&search=