The short answer is no.
Here are the code sections.
210.52(B)(1) requires the receptacle outlets for refrigeration equipment to be supplied from the 20 amp small appliance branch circuit.
However there is an exception.
Exception No. 2: The receptacle outlet for refrigeration equipment shall be permitted to be supplied from an individual branch circuit rated 15 amperes or greater.
That says we can supply it with another individual branch circuit.
From Article 100
Branch Circuit, Individual. A branch circuit that supplies only one utilization equipment.
So because your friends refrigerator is not
supplied from a small appliance branch circuit (it's only 15 amp) you can not supply anything else from it.
Strangely had it been supplied from the two required 20 amp small appliance branch circuit or had it been a 20 amp circuit and you simply called it a third small appliance branch circuit then you could supply as many other counter top receptacle outlets as you wanted.
[This message has been edited by iwire (edited 11-28-2005).]