Appropriation is the idea that ate the art world. Go to any Chelsea gallery or international biennial and you'll find it. It's there in paintings of photographs, photographs of advertising, sculpture with ready-made objects, videos using already-existing film.

'Summer of Love: Art of the Psychedelic Era,' the Whitney Museum's 40th-anniversary trip down counterculture memory lane, provides moments of buzzy fun, but it'll leave you only comfortably numb. For starters, it may be the whitest, straightest, most conservative show seen in a New York museum since psychedelia was new.

Those who love him love that he sells the most art; they take it as a point of faith that this proves Kinkade is the best. But his fans don't only rely on this supply-and-demand justification. They go back to values.

Don’t go to a museum with a destination. Museums are wormholes to other worlds. There are ecstasy machines. Follow your eyes to wherever they lead you, stop, get very quiet, and the world should begin to change for you. And if you see me, say something! We can talk about it together.

Abstract Expressionism - the first American movement to have a worldwide influence - was remarkably short-lived: It heated up after World War II and was all but done for by 1960 (although visit any art school today and you'll find a would-be Willem de Kooning).

I'm noticing a new approach to art making in recent museum and gallery shows. It flickered into focus at the New Museum's 'Younger Than Jesus' last year and ran through the Whitney Biennial, and I'm seeing it blossom and bear fruit at 'Greater New York,' MoMA P.S. 1's twice-a-decade extravaganza of emerging local talent.

Many museums are drawing audiences with art that is ostensibly more entertaining than stuff that just sits and invites contemplation. Interactivity, gizmos, eating, hanging out, things that make noise - all are now the norm, often edging out much else.