Most bowls caught on the head -  unicycle
Who
Nancy Huey
What
31 total number
Where
United States (Los Angeles)
When
The most aluminium bowls stacked while on a unicycle measuring 2.28m (7½ ft) tall is 31, by Nancy Huey, of San Francisco, California, USA, on the set of Guinness World Records: Primetime in Los Angeles, California, USA, on August 13, 1999.