Furuichi makes a Toriko reference during the Best Couple Grand Prix cooking challenge.
Ebian Ichikawa the "Blind Swordsman," one of the Six Upstarts, appears to be an homage to Zatoichi. He appears to be half-blind, he carries a katana Shirasaya style, making it look a bit like a sword-cane, and his nickname, "Blind Swordsman", isn't even trying to be subtle. In fact, in his first appearance, his nickname was actually "Blind Masseuse," which has to be a joke from Tamura, especially given how it was spelt with the exact same characters (座頭市) as the Blind Swordsman's name.
Chapter 190 features a small one to Naruto, when Baby Beel draws the titular character's whiskers on Nasubi's face.
In the next chapter Nasubi performs a finishing move on two opponents, which one of them points out originally belonged to Geese Howard from Fatal Fury.
Chapter 239: Oga uses Beel's energy to give himself an electric aura that turns him blond and later gathers power from all his friends, allies and rivals for the final attack on the bad guy. Dragon Ball much?
Dragon Ball nothing, Oga blatantly screams "I am a Super Saiyan" during the pounding he gives Satan/Fuji.