does it really matter? nearly every browser allows you to add custom search engines, and change the default one. if you set duckduckgo as the default search engine, you don't ever have to type in duckduckgo - you can just use your address field.
DuckDuckGo is probably easier to remember than most names. It just happens to take a little longer to type than Google or Apple. The Awesome Bar and Omni Bar make it less of an issue, though.
If it didn't have a movie behind it, you'd say, "Super-what?"