Here are some of my favorites:
"Sail"
as a Sea Shanty (You've gotta' hear this one! Look how many likes
he got.)
"Spoonful of
Fiddlers" (A hilarious cover of a Broadway hit in the style
of another Broadway hit.)
"Bible
Passages That Probably Won't Make it to Praise Songs" (An
original composition of one of my all-time favorites!)
Nickelback's "Rock Star" as a Barbershop Quartet ("Barbershop
Star")
"Fireflies"
(A cappella transcription)
"Replay
(Shawty's Like a Melody in My Head)" Barbershop Arrangement
Nickelback,
Barbershop-style
2014 Review
Barbershop Revue
2013
Review Barbershop Revue (Miley Cyrus, "What Does the Fox
Say?", Lady Gaga, and 15 more)
2012 Review
Barbershop Revue ("Call Me Maybe," "Gangnam Style," and 7
others)
"Teenagers"
(My Chemical Romance) Ragtime Piano Cover (I love it!)
"Arachibutyrophobia"
(the fear of peanut butter getting stuck on the roof of one's
mouth) An original composition and video. (The last verse is
actually sung with peanut butter stuck to the roof of his mouth.)
Also, if your ear is ready for Japanese gagaku, try:
Lady Gagaku
レディー雅楽 ("Bad Romance" gagaku, Japanese traditional court
music)
Or if you want to hear Mongolian-style xoomei/xoomii
throat-singing:
"Wonderwall"