United States v. Peter, No. 08-1544-cr (2d Cir. April 10, 2009) (found here)
Peter is, for the most part, an unremarkable procedural and substantive unreasonableness appeal. But Peter's plea agreement contained an appellate waiver (just as most plea agreements do). Yet, Peter was permitted to proceed with her appeal because the district court never adequately discussed that waiver with her on the record -- thereby opening up the opportunity for the appeal.
It's therefore clearly important (when reviewing records on appeal) to be on the lookout for this potential loophole. As the Second Circuit found: