Google Slam is genius in a few ways:
1. It is a great voting interface that Google created to promote/brand itself
2. It is a fun way for us/you/everyone to keep up with new technology
3. It involves the users and showcases creative ways in which users/we use different technology.
For round 1, I picked the 0-60 contacts in 10 minutes by Ben.
Round 2 was tough but I picked Using Google translate to order indian food.
Go vote, learn and explore!