Open Culture is primarily a blog that notes interesting web links, but it also contains connections to free films, podcasts, e-books, courses, etc. This site merits repeated visits.
I have mentioned the Arts and Letters Daily site earlier in the this blog. It's still a great site that I visit regularly. The Browser is a similar site that provides links to notable articles about science and culture. It's worth a look.
Do you want to visit the museums of the world in the comfort of your home, try browsing Google's Art Project. You can check out museum highlights and in some cases do a virtual walk in the chosen museum. Among the museums included are the Frick Collection and the Metropolitan Museum in New York, the Ufizzi Gallery in Florence and the Tate in London.
A couple of days ago, I was dabbling in my CD collection and came across John Stewart's song "I Remember America." With the recent gun violence in Tucson, Arizona, this nostalgic and melancholy song struck a chord in me, so I thought I'd pass along this YouTube video.