Found this little tidbit at DarkHorizons.com – so apparently Tom did attend an Oscar After Party.

TOM CRUISE
Cruise is set to do the third “Mission Impossible” movie and says that there’s a number of actors he’s talked to about it. He doesn’t rule out working with Kidman again either, even suggesting a role for her in MI3 which he has mentioned to her. Says she’s still quite special and hopes to do a film again with her. Is interested in doing “Iron Man” but says it’s still in talk stages.