Feel free to use my music search engine for most requested. The top 200 is the same as Tohers' link but this breaks down by decade also.
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This is the index page with a search of my libraries. I need to update as per the methods above.. Use the different search filters.
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I will be doing a birthday party for a sixteen year old. This used to give me trepidations like crazy then i found a good method. While setting up I would put a couple of kids on the computer to search and and make a play list. Also take requests for dance music during the party. . If WIFI is available I download what I dont have.
Then I track these requests and consider getting them for karaoke. One request for karaoke from this new DJ list is a definite karaoke song to get. BTW I never listen to the radio and first time when I hear something is at karaoke. All of the new songs I sing after awhile I have to get the artists original to see what it originally sounded like.
This search engine is DJ Intelligence which runs about $100/year. It also has instant online quotes and other party planning tools. For those that do parties it is a good tool.