Tomorrow afternoon Walt Disney Co. (NYSE: DIS) will be answering Wall Street's questions about the strength of its US amusement parks when it reports its second quarter earnings.

The last time that Disney reported earnings was February 5, when the company topped analysts' estimates of 52 cents per share by a whopping 11 cents.

This time, analysts expect earnings of 51 cents a share on sales of $8.51 billion, compared with 43 cents and revenue of $8.07 billion a year earlier. Sales are expected to decline year-over-year as a result of the weak market conditions hurting Disney's theme parks, particularly its Walt Disney World in Florida.

Summer is upon us, and for those of you who like to invest in companies you can examine up close, this is the perfect opportunity to expense some travel to the nation's amusement parks. For research, of course. One way to judge the quality of these stocks is how nauseous they makes you (in a good way, of course). For example, here are the 2006 top 10 steel roller coasters in the country as rated by The Internet Best Roller Coaster Poll.

1. Superman, Six Flags New England, Springfield, MA (Six Flags Inc., NYSE: SIX)
2. Millennium Force, Cedar Point, Sandusky, OH (Cedar Fair Entertainment Co., NYSE: FUN)
3. Nitro, Six Flags Great Adventure, Jackson, NJ
4. Goliath, Six Flags Over Georgia, Atlanta, GA
5. SheiKra, Busch Gardens, Tampa FL (Anheuser-Busch, NYSE: BUD)
6. Superman, Six Flags America, Baltimore MD
7. Montu, Busch Gardens, Tampa FL
8. Phantom's Revenge, Kennywood Park, Pittsburg, PA (Kennywood Entertainment)
9. Superman, Darian Lake, Buffalo, NY (CNL Income Properties)
10. Dueling Dragons-Fire, Universal Islands of Adventure, Orlando, FL (General Electric, NYSE:GE)

Looking for a way to teach your children about stocks? A few shares in one of their favorite parks might capture their attention!