I did some searching, and apparently he's a Five-spotted Hawkmoth, aka my garden nemesis, the tomato hornworm! Never knew those hornworms grew into these adorable giant moths.

[Image description: Large moth sitting on back of hand, covering about 1/3. Moth is fuzzy, with grey striping and prominent yellow spots running down its back.]

From left to right:

Uzbek Golden

Purple Dragon

Kyoto Red

Gniff

[Image description: Four brightly colored sliced carrots on a cutting board; being gold, purple with orange and green interior, red with interior rings of red and white, purple with purple and white radiating from center.]