Nice recommendation by investment advisor Richard Lehmann in Forbes's 12/14/09 edition for ERF. He also likes PWE. These are two Canadian royalty trusts that trade like stocks. I have owned modest positions in them for several years. Some people also believe they have an inflation hedge advantage (see Lehmann's article in Forbes magazine), because they own lots of oil and gas.
Since 12/14/09, on a price-adjusted-for-dividend basis ERF has risen 6.04%, PWE is up 6.98%, and by comparison SPY is up 2.13% and Vanguard's Total Stock Market index fund (VTSMX) is up 1.97%.