Tortilla Roll-ups

1 cup sour cream
8 oz. cream cheese
4 oz. can chopped green chilies, drained
4 oz. can chopped black olives, drained
1 cup shredded cheddar cheese
2 oz. package dried beef, finely chopped
1/4 cup finely chopped green onions
garlic powder, to taste
10-12 flour tortillas
salsa

-Mix first eight ingredients together. Spred mixture on tortillas. Roll each tortilla and wrap individually in plastic wrap. Refrigerate at least several hours, or even for a day or two. Before serving, unwrap and slice. Serve with salsa.