This recipe is from my sister-in-law Adrienne, and has become a Poulsen family staple:
1 lemon (juiced)
3 cloves garlic
1/2 tsp. pepper
1 tsp. salt
1/4 -3/4 c. vegetable oil (the original recipe calls for 3/4 cup; Jen only uses 1/4 cup)
Blend thoroughly. Serve over salad with romaine lettuce, slivered almonds, bacon, cheese (if you're into that :)), tomatoes, etc.