Most backboard passes to a dunk in 30 seconds using a mini-trampoline (team)

According to Official Guinness Records,

The most off the glass passes to a dunk in 30 seconds using a mini-trampoline by a team of four is 35 passes and was achieved by Team Acrodunk (USA) at the NBA All-Star Jam Session in Phoenix, Arizona, USA, on 14 February 2009.
Team Acrodunk are a team who do acrobatic slam dunk shows and impact performances. The team that set the record are Gregory L. Mueller, Gregory T. Jerralds, Romale D. Crawford and Eddie Ray Johnson III.

For a complete list of 2009 records, please visit 2009 Guinness Records in United States.

Other United States records that might interest you:

• Most consecutive three pointers scored on NBA 2K9
• Most vertical feet skied uphill in 24 hours (female)
• Most vertical feet uphill in snow shoes in 24 hours (female)
• First 3D spy
• Most children delivered at a single birth to survive
• First African-American president of the USA
• First president with regular email access