of the dishwasher.
>> reporter: it was this video,
collected best clip 25 years ago
on the first ever episode of
"america's funniest videos."
what always works?
>> groin hits.
pinata whacks.
birthdays are always a disaster.
>> there's the dog.
who keeps thinking he's being
attacked by his hind leg.
[ dog barking and growling ]
>> reporter: once, the show
received 36 mailbags of vhs
tapes a week.
now staffers sift through
thousands of videos uploaded
daily.
♪
>> wow.
>> reporter: bob saget was the
show's original host.
>> he was great at doing the
voiceovers.
>> pushing a rock pushing a
rock, turning around.
>> reporter: for the last 15
years, it's been butter-smooth
tom bergeron in charge.