2 out of the last 3 drafts, sure. When you look at 2 picks moved out of the last I dunno, 15 drafts, it starts to look less common. I really can't remember it happening much. Oh, the Rangers traded for the 4th overall in 99, so there's that. Philadelphia dealt for 4th overall in 2002. Different era though - bonuses could be an issue back then, now they're not. It's worth noting that both of those trades happened with Tampa.
Burke had to do 100 things in the 1999 draft to get both Sedins if I remember correctly.