"Swallow" is very popular indeed, for obvious reasons. Windsong is also popular - so much so that Classic Boat showed a picture of the wrong one in it's Top 200 Classics recently.
Three good ones for the VHF are:
"Morning All" - Orwell - an S&S34, (a sibling of "Morning Cloud")
"Wakey Wakey" - Deben
"Its only me" - Crouch
My personal favourite, on a Drascombe Lugger, is:
"Bucky Lugger"
Signed, the owner of the oddly named: "Francis Fletcher"
Oh, and there used to be a racing dinghy called "Hoof Hearted", which was always worth a laugh when the yacht club commodores wife was reading out the end of season race results! /forums/images/graemlins/grin.gif
Dunno about most popular names but the boat name I always liked is 'Weather or Knot' which I think belongs to a Cygnus owned by occasional MBM contributor John Cragg