1. DEATH LENDS A HAND - Golf - Columbo to Ken Archer (Correct)
2. DEAD WEIGHT - Fishing - Columbo to Gen. Hollister (Correct)
3. MURDER BY THE BOOK - Swimming - Ken Franklin to Lily LaSanka (Correct)
4. EXERCISE IN FATALITY - Exercise (treadmill, in this case) - Columbo to Milo Janus (Correct)
5. MURDER IN MALIBU - Tennis - Wayne Jennings (Correct) - I thought this one would be hard, but I was wrong! Good job!
6. GREENHOUSE JUNGLE - Pool - Columbo to Jarvis Goodland (Correct)
7. DOUBLE EXPOSURE - Golf - Columbo to Dr. Kepple (Correct) - love this scene
8. MOST CRUCIAL GAME - Football - Columbo to Paul Hanlon (Correct)
9. UNEASY LIES THE CROWN - Horse Racing - Wesley Corman to Columbo (Incorrect)
10. MOST DANGEROUS MATCH - Chess - Emmit Clayton to reporter (Not answered)
11. IDENTITY CRISIS - Shooting - Columbo to Shooting Gallery operator (Not answered)
12. BLUEPRINT FOR MURDER - Tennis - Jennifer Williamson to Elliot Markham just before she discovers Bo's hat (Not answered)
Congrats! I'll try to post Quiz #2 later this week.