Well, here's a good way to look at it. From here:
http://history.nasa.gov/afj/compessay.htm
I found out that the processor on board the Apollo guidance computer could do a single addition operation in 23.4 microseconds. Well assume that that was done in one instruction, which would translate to about 43,000 instructions per second (42,735 to be precise).
The modern Blackberry's run on ARM7 or ARM9 processors. I see a wide range of instructions per second numbers for these, ranging from 20 million to 96 million. If we use that, but be conservative and say 30 MIPS (million instructions per second), then that would make a modern Blackberry's processor about 700 times more powerful than the computer that flew the Apollo missions.
The Blackberry 950 runs on a 80386 processor which is about 10 MIPS, so if you have a 950 its only about 230 times more powerful.
This is probably a very conservative estimate, since the instruction set on the Blackberry is going to be much more complex that that on the Apollo guidance computer, meaning you can get more bang for your per instruction buck.