Wikipanion free
NPR
Epicurious - very nice searchable recipe database, published recipes only
Accuweather free - a more minimalist weather app, I like it a lot, very iPad
Cool Hunting - cool products and stuff from all over the web
We Rule - farmville plus simcity, sort of
Sci Fi Wire - scifi/fantasy news feed from SyFy channel. Articles, videos, interviews, about movies tv etc. For example, this week there's a lot of stuff about the new season of doctor who.