G4 showing first GTA IV gameplay footage this Sunday

G4 will show the first footage of GTA IV being played this week, according to the TV service. From the site:

GTA IV is almost here, but if you want to get an early look at the biggest game of the year, make sure to check out G4 on Sunday, April 27th for an Exclusive Sneak Peek.

At noon this Sunday, we'll be interrupting our regularly scheduled programming to bring you the very first Hands On Demo of Grand Theft Auto IV with a special GTA IV: Exclusive Sneak Peek.

It’s an Exclusive World Premiere that will be coming to you commercial free and ONLY on G4! This is the first moment Rock Star is making game play footage available to the public and G4 is the only place to catch all the GTA goodness on your TV, with loads of bonus footage available on G4tv.com!

It’s G4’s special GTA IV: Exclusive Sneak Peek this Sunday at 12PM ET, only on G4!

That's 5pm UK time, by the way, or 6pm if you're on the Continent.