Hot Shots Westside Billiards

For family-friendly pool, I don't know what else you could want.  Tons of tables, old-school atmosphere, decent simple snacks, and very inviting prices.  Also, U-Haul trailers for when your spouse kicks you out for spending too much time playing pool.

OK, look.  If you want to take your kids or friends to a low key ALL AGES atmosphere with a LOT of pool tables available then this is a 5 star place.  If you want alcohol or good food, then you won't get those here.  They also offer pro players services like sales and repairs to cues, etc...
Staff is kind, easy to talk to and flexible.  Tables were in reasonably good condition (there are "extra nice" tables available as well for an extra fee).  Children under 10 play free with an adult (just one adult needed) - which worked well for our family.
Arcade had a lot of oldy but goody games in it like Ms Pacman.  All were .25cents though.  
Food was just kind of blah, but the $5 happy hour deals are good (for things that cost $5 like corndogs).  The burger was simple.  Fries and chips were buried under salt.  Long story short don't expect "good" bar food as their food set up is really simple.  Basically they have costco stuff that they heat up onsite.  
-Come here for the billiards and retro arcade games and darts, and you will have a good time.  Cavernous large location with lots of free parking.
And yes, they have a Uhaul business too.

This is the only U-haul Pool Hall in the USA (I will take Jeff's word for it).  I reserved a u-haul trailer in Tigard and got a call from Jeff saying he had one for me.  Confused, I drove to the address he gave me and was surprised to see a pool hall with u-haul trucks and trailers.  The service was exceptional and it actually helped me out to get the trailer the day before my move.  Bonus - the business is open later than the other U-haul stores.