Miguel Angel Jimenez - The Most Interesting Man In The World (Dos Equis TV commercials)
I think this one's more for his smoky voice and accent than it is for his actual looks. They both smoke cigars and travel the world. Stay thirsty, my friends...
Luke Donald - Soren Kjeldsen - actor Neil Patrick Harris
Could there be two golfers who look like Doogie Howser/Barney Stinson? Apparently there are at least two entered in The Masters this week. Each has a forehead that won't quit - more like a "five-head." Hey-o....
Larry Mize - UNC head coach Roy Williams
A former Masters champion, and a current NCAA champion...
The main difference between these two - one has whiskers and a 6" thick layer of blubber to keep himself warm during the inactive winter months, and the other is a flippered marine mammal.
Soren Hansen - actor Paul Lieberstein (Toby Flenderson from "The Office")
Kevin Sutherland - actor Jack McBrayer (Kenneth from "30 Rock")
They both have an "aw shucks" quality.
"Gee Mr. Donaghy, I think you're the best boss ever."
"Gee Mr. Woods, you sure can putt real good?"
Carl Petterson - actor Larry Joe Campbell from "According to Jim"
Alvaro Quiros - actor Sacha Baron Cohen from "Borat"
Add your suggestions in the comments and I'll try to add as the day progresses.