Crawford v. Washington, 124 S. Ct. 1354 (2004), is one of the most dramatic Evidence cases in recent history, radically transforming the doctrine governing the Confrontation Clause of the Sixth Amendment to the U.S. Constitution. Crawford is a very positive development, but leaves many open questions - and forces Evidence teachers to rethink how they teach hearsay and confrontation.
Friedman, Richard D. "The Crawford Transformation." AALS Section on Evidence Newsl. Spring (2004): 2-5.