In Uncharted 2: Among Thieves for the PS3, there are several taunts you can unlock to purchase for use in multiplayer games when you reach certain levels.
Here is the list of taunts you can unlock, what level is required to unlock them, and how much they cost.
Flex – Level 20 – costs $50,000
Flurry – Level 30 – costs $100,000
Kiss – Level 10 – costs $10,000
Pump – Level 53 – costs $500,000
Yes – Level 40 – costs $250,000