The Utrecht gay scene is quite part y focussed and rather alternative. There are two gay bars, both at the Oudegracht in the city center: Bodytalk and Wolkenkrabber. Both bars have a small club in the ancient basements.
Several clubs have weekly or monthly gay parties which attract a young crowd. the party scene includes parties like Club Rits and Cruise Control. Check out the Nighttours agenda for exact dates.
PANN is something of an Utrecht institute. As a voluntary foundation, PANN organises regular parties which vary in size and location, but are always sold out very quickly. Check dates for PANN an Nighttours.