Much of what has been said in this thread is correct, but there is a considerable amount that is based on misconception of black-hole dynamics. I'll describe an experiment, first from the point of view of an observer watching at a safe distance from the event horizon and one from the point of view of an observer in free fall into the black hole:

In the first case, you're stationary at a safe distance outside the event horizon of a black hole with a pair of identical synchronized clocks A and B. Clock B, a deep saturated violet in color, is attached to a long massless measuring tape free to unwind from a frictionless drum.

You release clock B and watch it fall toward the event horizon of the black hole, unreeling the measuring tape as it falls. At first, its speed increases but after a while slows, becomes momentarily constant, then begins to decrease. Throughout this time, the movement of its hands gradually slows. Its initially bright violet color gradually fades progressively through paler shades of spectral colors indigo, blue, green, yellow, orange, and red, the intensities of the colors simultaneously fading into invisibility. Then, through use of a sequence of infra-red, microwave, radio-wave, and x-ray, and finally gamma-ray detectors, you try to follow it for awhile, but finally lose it altogether long before you reach the end of this sequence of detectors. The combined outputs of all of your observations reveal that the distance of the clock from the event horizon has been approaching the event horizon asymptotically but will never reach it. Throughout this time, the hands on the clock have been slowing at a rate that would bring them to a full stop by the time the clock reached the event horizon. The measuring tape reveals that the slowing of the descent toward the event horizon is an illusion. The clock is actually falling more and more rapidly as is revealed by the increasing rotational speed of the windless from which the windless is paying out the tape. Eventually, although the descent rate of the clock appears to have stopped altogether, the windless is paying out tape faster and faster. This process continues indefinitely.

In the second case, you are in free fall toward the event horizon along with clock B. You neither see nor sense anything unusual in your immediate surroundings most of the way down although your descent is accelerating steadily. Clock B continues to run at the same rate as before, but you see clock A at its fixed distance from the event horizon running faster and faster, its hands eventually whirling around so fast that they become a nearly invisible blur, like the propeller of an airplane with the engine running at full throttle. The speed of your fall toward the event horizon will increase at an accelerating rate.

If the diameter of the event horizon is comparable to your own dimensions, you are in for additional unpleasantness: Whatever your orientation with the vertical, you'll feel yourself being stretched along a vertical axis and compressed in the horizontal plane. If the diameter of the event horizon is large compared with your own dimensions, you will have no way to detect your passage through the event horizon: It would look like a totally black circle as you approach it, hence the name "black hole". Once you fall through it, you'll still see nothing at first. Because of the reversal of the roles of time and distance in the direction toward the center of the black hole, I have no idea what you'd see and won't try to guess. All I can say is that it presumably wouldn't be pleasant and that you'd rather be somewhere else.