Ooohhh man so many good ones. Great thread.
el G's 1999 1500 final is my favorite. 3:27 with the guitar playing, finishing well ahead of Noah "car accident" Ngeny and a trio of Spaniards (lol!!!).
Ramzi's 1500 & 800 double at '05 Worlds was glorious. He almost got caught at the line in the 15, but his 800 was a work of tactical genius. Can't forget his lane 7 drift in the 1500 heats either.
"18-year-old" Kipchoge beating el G in '03, squeezing him right up against the kerb.
Ethiopian women's world records in the 1500, 5000, and 10000. Literally unbelievable.
Bolt's '09 double (triple? I assume he was in the winning relay too) was comical.
Any recent marathon with the "random" 2:04 African guys.
There are tons more I'll think of later.