Thousands of names memorized

In his book The Tipping Point Malcolm Gladwell claims that humans are only capable of remembering 150 names and relationships at any given time. Traveling and meeting as many people as I do I know this number can be expanded. Rich Liedtke (father of my good freind Fritz blows my list out of the water! He was recently featured on NPR because he knows the name of a majority of more than 3,000 people that attend his church: Vancouver Man's Persoanal Touch Encourages New Members.