What are Boba Fett's most prominent appearences?

There are a number of works that feature Fett in a prominent role in Legends canon (not counting the YA or children's novels):

• The Bounty Hunter Wars trilogy, which begins immediately after Fett's escape from the Sarlaac. It also features flashbacks to events around the time of A New Hope.

• The Legacy of the Force series, specifically Bloodlines, Sacrifice, Revelation, and Invincible. In these,

• Boba Fett: A Practical Man (e-book), which features Boba Fett and the Mandalorians in their work against the Vong. Fett appears only briefly in the main New Jedi Order arc.

Fett also appears in the Fate of the Jedi arc briefly, but does play a crucial role in the novel Conviction.

One set of YA novels that does feature Fett several times is the Young Jedi Knights series, specifically the Diversity Alliance arc.

A separate answer for new Disney canon:

• While Boba Fett the person doesn't yet appear, a new canon book "Aftermath" mentions Jawas on Tatooine selling a Mandalorian armor which was strongly implied the Sarlacc-eaten-Fett owned, to a new Sheriff.

  This blog post covers it in detail, including book quotes

  From the box, he withdraws a helmet. Pitted and pocked, as if with some kind of acid. But still-- he raps his knuckles on it . The Mandalorians knew how to make armor, didn't they? "Look at this," he says, holding it up. "Mandalorian battle armor. Whole box. Complete set, by the looks of it. Been through hell and back. I think my boss will appreciate this."

• So far, Fett's status in new canon is unclear but plausibly he survived, just like in the EU/Legends.

  These 2 blog posts cover it: Schrodinger's Fett and Is Boba Fett Dead or Alive?.

  Looks like the most authoritative hint points to Lucas deciding that Fett is indeed alive in 2014.

• Just to be clear, any mentions from the Battlefront videogame are NOT considered part of Disney canon and thus don't count. But he does appear there.