How to delete all products?

When I installed ZC, it came with hundreds of products in tens of categories. I want them all to go away. Is there a way to delete everything at one time, instead of one at a time?

Thanks,

Jonathan

Other than erasing the database and starting from scratch (in which case you'd lose all the config settings you've worked on) the easiest way to remove all the demo data is via phpMyAdmin - empty these tables (all of which had data inserted when you installed the demo products):
address_book
customers
customers_info
categories
categories_description
ez_pages
featured
group_pricing
manufacturers
manufacturers_info
media_clips
media_manager
media_to_products
media_types
music_genre
products
products_attributes
products_attributes_download
products_description
products_discount_quantity
products_options
products_options_values
products_options_values_to_products_options
products_to_categories
record_artists
record_artists_info
record_company
record_company_info
reviews
reviews_description
salemaker_sales
specials