They are, and they're not hard to make...it just takes a long time.
One brick of cream cheese (real, not neufchatel) and one package of oreos makes either 35 ping pong ball sized ones or nearly 75 shooter-marble sized ones.
Bring the block of cream cheese to room temperature and grind the oreos to a fine powder in a food processor, then use a mixer to combine them into a thick paste. When the paste is thick and consistent, roll it into balls and plop them on a parchment-lined cookie sheet.
Then melt chocolate (chips or melting chocolate) in a double-boiler and dip each one. When you've dipped them all, pop them in the freezer just long enough for the chocolate to set (dry to the touch, not long enough to crack). Transfer to a cooling plate or rack and drizzle with a contrastring color of chocolate.
Good stuff. Hard to keep track of how many you're eating though
