On 8 October 2007 Wikimedia Commons has reached a total of 2,000,000 media files.
Growth is still rising. On 11 August 2007 the project reached 1,750,000 media files (~4,200 files/day to 2M). On 25 May 2007 the project reached 1,500,000 media files (~3,200 files/day to 1,75M).
Congratulations. Let's try and keep up with the maintenace :)
Cheers!
Siebrand