1. 1. Al Hansen

   At Andrea Rosen; 525 W. 24th St., nr. Tenth Ave.; 212-627-5450

   Funky, Fluxus-era works made from Hershey wrappers, cigarette butts, and other detritus.

2. 2. Tim Lee

   At Cohan and Leslie; 138 Tenth Ave., nr. 19th St.; 212-206-8710

   Videos that skillfully reference Bruce Nauman and Public Enemy, among others.

3. 3. “Fallout: Cold War Culture”

   At Mitchell-Innes & Nash, 534 W. 26th St., nr. Tenth Ave.; 212-744-7400

   Art about espionage, surveillance, and rumor (including new work by Sam Durant and Adam McEwen).

Related:

• Articles by Karen Rosenberg
• Table of Contents: May 1, 2006 issue of New York | Subscribe!