There are two things on my shelf at home: 99 Bananas, and a DeKuyper creme de banana. 99 Bananas is a banana-flavored schnapps, while the DeKuyper is a neutral-tasting, unaged grape brandy flavored by means of infusion or maceration.
I enjoyed both tonight by making an "OJ Banana" cocktail. What you basically do is fill a highball glass with ice cubes. Then add about two ounces of either liquor. Fill to the brim with ice-cold orange juice, and stir a little.
Although I like them both, I think the creme de banana works better.