I like pretty much all sports, both as participant and spectator.
The American "big 3" (baseball, basketball, football)
are OK but I gravitate toward more obscure sports like badminton and curling.
Here are some sports that you not be familiar with:
I've actually played this, at the Queen's Club in London, with Francois Grey.
The rules are extremely complex; a partial explanation is
See for yourself.
Note: once I was in Tokyo and my hotel room overlooked a school playground.
I observed a number of games,
and they all rewarded teamwork rather than individual achievement.
For example, a pair of long wooden skis that 10 or so kids
strapped their feet into - to move forward, everyone had to
act in unison.
A much fancier version of tag.
Also beach Kabaddi.
Another children's game played by adults.
A picnic game played by mouth-breathers.
A game in the hockey mold, like lacrosse.
Ping-pong played with soccer skills.
Badminton with hockey skills. Amazing.
A basketball variant.
Similar to the Dutch game of Korfball.
Volleyball on trampolines and bouncy castles.
Basketball on trampolines.
Hockey on bicycles.
This is played in a park near my house.
The name says it all.
There are unicycle variants of other sports too.