I like natural gas right now. CHK, ECA, XOM, DVN, SD.
I'm not saying go all out natural gas, but it has a few things that seem to be working for it including a seemingly colder winter than most recent years, the recent insertion of CNG for fleet vehicles. I would think at some point in the future CNG may be an option for the consumer.
We did this a while back for a summer internship at a brokerage firm. It was through Investopedia and it had a 20 minute market delay (still does I believe).
Each group was partnered up with a stock broker and we were picking stuff he recommended etc.. Well we had live feed on the market. So we would pick a few stocks and just load up on them and within a few minutes if they didn't do well we would cancel the trades and try again.
They found out we were doing it and just stopped keeping track of the game. I think our portfolio ended up like 560% in a couple months.