Actually, let me amend that... it's tricky to compare the boys and girls records together, so the order between the girls and boys marks can definitely be moved around as I am not too sure of them.
Here is another look I would promote, a little more biased towards the boys I suppose... maybe it would be best to just compare the boys and girls records separately :)
15 Greatest Track Records
1. Girls 200m (22.11 - Allyson Felix, CA)
2. Boys Mile (3:53.43 - Alan Webb, VA)
3. Boys 110m Hurdles (13.08 - Wayne Davis, NC)
4. Boys 4x100m Relay (39.76 - FW-Wyatt TX)
5. Boys 100m (10.01 - Jeff Demps, FL)
6. Girls 100m Hurdles (12.95 - Candy Young, PA)
7. Boys 400m (44.69 - Darrell Robinson, WA)
8. Boys 5,000m (13:37.91 - Galen Rupp, OR)
9. Boys 300m Hurdles (35.02 - Reggie Wyatt, CA)
10. Boys 200m (20.13 - Roy Martin, TX)
11. Girls 4x100m Relay (44.50 - LB Poly CA)
12. Girls 300m Hurdles (39.98 - Lashinda Demus, CA)
13. Girls 100m (11.11 - Angela Williams, CA)
14. Girls 400m (50.69 - Sanya Richards, FL)
15. Boys 4x400m (3:07.40 - Hawthorne, CA)
and the 10 weakest:
1. Girls 4xMile (19:56.75 - Suffern NY)
2. Girls 4x800m (8:43.12 - Roosevelt MD)
3. Boys 4xMile (17:06.6 - South Eugene OR)
4. Girls Mile (4:34.9c - Jordan Hasay, CA)
5. Girls 2 Mile (9:52.1c - Kim Mortensen, CA)
6. Boys 4x800m (7:30.67 - Albemarle VA)
7. Girls 4x400m (3:35.49 - LB Poly CA)
8. Girls 5,000m (15:48.91 - Emily Sisson, MO)
9. Girls 800m (2:00.07 - Kim Gallagher, PA)
10. Boys 800m (1:46.45 - Michael Granville, CA)