What will we call Windows 7?

With Windows 7 just around the corner from release, I wonder about something. What will people who have Windows 7 installed call it?

For example, those with Windows 98 called it just that, or sometimes you'd hear the shortened '98'. Windows NT would say they had 'NT' on their system.
"I have 'XP'."
"Oh yeah, I have 'Server 2003'."
"I have 'Vista'. It sucks."
"I just got '7'."
[silence]
"Seven what?"