This is a fun topic. I'll put together some thoughts, not sure if it will be 10 or 20 or somewhere in between:
1) Jarrell, Texas 1997 - Some of the most complete damage of homes ever seen.
2) El Reno, Oklahoma 2011 - 1.9 million pound oil derrick was toppled and rolled 3 times. 20,000 pound truck was thrown over a mile
3) Phil Campbell, Alabama 2011 - F5 damage for much of its length. ground scouring, a car was completely destroyed and never found
4) Bridge Creek, Oklahoma 1999 - The infamous Moore tornado of 99, measured 318 mph winds
5) Smithville, Mississippi 2011 - Picked up an SUV and threw it a half mile into the towns water tower. all plumbing in some hones were either shredded or missing
6) Andover, Kansas 1991 - famous Andover tornado
7) Kellerville, Texas 1995 - This was only rated an F4 but the damage to a home was so intense that the surveyors missed it. Also ripped up multiple stretches of pavement. https://www.youtube.com/watch?v=-qmJOy0bxMQ (can be seenat 11:00 of this video)
8) Guin, Alabama 1974 - One of the longest F5 damage paths for a tornado
9) Goessel, Kansas 1990 - The second F5 for this supercell after the Hesston storm.
10) Plainfield, Illinois 1990 - Fujita said it was some of the most intense ground scouring he's ever seen
11) Bakersfield Valley, Texas 1990- Only rated an F4 but rolled 180000 pound oil tanks 3 miles and 600 feet up a hill
12) Stratton, Nebraska 1990 - also rated an F4 and fairly unknown but mangled farm equipment into balls and picked up mud from a lake and plastered it throughout the town(the pic below is of the incredible meso of this storm)
13) Philadelphia, Mississippi 2011 - 2 foot deep ground scouring
14) Brandenburg, Kentucky 1974
15) Wheatland, Pennsylvania 1985
16) Barneveld, Wisconsin 1984
17) Loyal Valley, Texas 1999
18) Jordan, Iowa 1976 -
19) Mulhall, Oklahoma 1999
20) Greensburg, Kansas 2007