The PC version of Grand Theft Auto IV allows for mods. We've shown you some of these before. But I've never seen a collection so diverse, and so impressive, as that of modder William Peddell.
Posting on the GTA4-MODS forum, he's made a speciality of transforming the game's star into everyone from Zelda's Link to Half-Life's Gordon Freeman through to the...Teenage Mutant Ninja Turtles.
What's so impressive about them isn't just that they work (these kind of things can often look a little wonky), but that they're so good-looking while they're doing it.
They're not that difficult to get working in your game, so if you want to try something like this out, head to William's GTA4-MODS page below to download and install the skins that take your fancy.