Took my father on his first bike ride yesterday

So I'm doing the Atlantic City sprint distance tri in Sept with my parents.  I'm doing the swim.  My father's doing the bike, and my mother's doing the swim.  My dad's been disappointed with his training because he's only been biking with a mountain bike and would like to go faster.  So, he bought a GT road bike online, built it himself, and we went for a 14 mile ride yesterday.  He normally does 11 miles on the mountain bike, so this was a new personal best for him, the first time on a road bike too.  I thought it was really cool to get my parents involved and wondered how many triathletes get into tri's simply because family members are in it too.  Now, even though our relay isn't till Sept, we're making plans for our next one we want to do in June.  Plus, my father was really excited since he went faster than any previous rides on the mountain bike.

Anyone have similar stories of getting their family involved?