The Boiler Room with Ben Afflect was a good one, even though he swears a lot he makes the points: (1) have answers to objections; and (2) a sale is made on every call - it just depends on whether you are buying his objection or he is buying your service!
Probably the best sales speech ever by Adam Baldwin in Glengarry Glen Ross. "Coffee's for closers!" and "A-B-C. A-Always, B-Be, C-Closing. Always be closing, always be closing."