Some great animation here. Some words misspelled, too, but still done well.
http://www.thinktechnologies.com/portfolio/demos/Blackhole.swf
http://www.thinktechnologies.com/portfolio/demos/Blackhole.swf
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The second one, being shot out the other side, I haven't heard of, but it may be possible. An important question is how much an object would be squeezed as it passes through.
The third one, going through a wormhole, is rather intriguing, but there are two questions for using one to travel. Will it be stable? Will its tidal forces be tolerable? If a wormhole must be stabilized by quantum-gravitational effects, then it will have Planck size scales, meaning that all structure of an object passing through will be crushed -- all macroscopic structure, all atomic structure, all nuclear structure, and all hadronic structure will be crushed out of existence.
I might sound really ignorant here, but I wonder how anything can pass through something that is so dense that not even light can escape it.