J.D. has a colorful personality. He often shares with his friends and strangers anecdotes about things he likes and dislikes.
Likes[]
J.D. loves his stuffed dog, Rowdy. ("My Fruit Cups")
- '80s rock band Journey ("My Journey")
- Almond Biscotti
- Animal Planet ("My First Step")
- Appletinis
- Nectarinis (when J.D. wants a "harder" drink)
- Tangerinis (considers this a "real" drink compared to his usual appletini)
- Billy Ocean
- Black men (not in that way)
- Black and white photography
- Cabbage
- Calling things, situations, and people (mostly his romantic involvements) "Amazing"
- Candid Camera ("My Philosophy")
- Candy Bracelets
- Daydreaming
- Describing things as "dynamite".
- DMX ("My First Day")
- Dr. Dre ("My First Day")
- Eating Elliot's mango body butter ("My Way Home")
- Elliot's nose ("My Bed Banter & Beyond")
- Flow charts (Our Meeting with J.D.)
- Gettin' "some"
- Grey's Anatomy
- Harry Potter (and wishes he was a wizard)
- His butt / Turk's butt
- His hair
- His hands
- His journal ("My Unicorn")
- J.D. and Turk's Games
- Jimmy Walker
- Jordan Noble
- Justin, his stuffed unicorn ("My Best Friend's Baby's Baby and My Baby's Baby")
- Katya his pillow girlfriend
- Keith's areolas
- Leroy (The band) ("My Mentor")
- Les Miz
- Lost (the TV show)
- Macking
- Matthew McConaughey ("My Jerks")
- Nurse Tisdale's 9:15 cup of coffee ("My Own Personal Jesus")
- Pat Benatar
- Penguins ("Our White Coats")
- Peppering his conversations with cute animal imagery when he is smitten
- Porcupine's hiccup
- Turtle's wink
- Pirates
- Playing with words
- Repeating everything Elliot says in a weird tone of voice ("My Bed Banter & Beyond")
- Rhyming
- Rock band Toto ("My Way Home")
- Rowdy and Steven
- Sanford and Son
- Sasha, his blue scooter
- Scarves
- Sesame Street ("My Happy Place")
- Shower Shortz
- Sports grass
- Steak Night ("My Last Words")
- Stealing from the hospital ("My Fruit Cups")
- Stupid Movies
- Telling Turk when he has sex
- The artist formerly known as Jon Traw
- The Mighty Kites
- "The Wave"
- The way cashmere feels on his skin
- “Tighty-whiteys”
- Toast ("Her Story")
- Tupac Shakur ("My First Day")
- Turk's Spinning Eagles
- Unicorns
- Wheelbarrow-style ("My Interpretation")
- When Dr. Cox winks at him ("My Fruit Cups")
- Wolverine/Hugh Jackman
Dislikes[]
J.D. hates feeling out of the loop, which is how he ended up playing Jiggly Ball, which he also hates. ("My Jiggly Ball")
- Beer ("My Last Words")
- Beets
- Courtney Brock
- Daschunds ("My Chief Concern")
- Dragonflies
- Escalators
- Fake presents as decorations
- Gay old guys hanging out on his deck ("My Mirror Image")
- Geography
- Hanging wedgies
- His adam's apple
- His brother visiting him at work
- His brother (period)
- His chinless face
- His doughy physique
- Hot air balloons
- Jiggly Ball
- Mean People
- Micheal Flatley
- Movies with Andie MacDowell ("My Butterfly")
- Other people dating or having sex with Elliot (or who already have)
- Pennies
- Peachtinis
- Politics
- Scotch ("My Fallen Idol")
- Sean
- Sharks
- Sick People
- Small rodents
- Speed Metal
- Todd's High-Fives
- Waterparks ("My Identity Crisis")
- When other people bond with Dr. Cox ("My Chopped Liver") ("My New Role")
- Whit Prowdy