A pretty cool dramatization of the charge from The Charge of the Light Brigade, starring Errol Flynn. It's way more action movie than mournful tribute, but that doesn't make it any less good.
In case you wanted to see the action in color…
A sort of trippy, slightly confusing but weirdly fun cartoon recap of the Crimean War.
A pretty good song, too.
A very early sound recording of the very old poet reading his famous poem. Sounds like he's underwater, wrapped in gauze, and about a half a mile away, but still worth a listen.
An actor performs a dramatic reading of the poem.
An NPR Weekend Edition episode from the 150th anniversary of the Battle of Balaclava.
You owe it to yourself to check this one out.
An article from the BBC on the 150th anniversary of the Charge.
Read excerpts from the letters and journals of General George Paget, a guy who was a part of the Battle of Balaclava.
A good place to start for information about Tennyson's life.
Here's another bio, plus a nice group of online texts of Tennyson's "greatest hits."
Learn more about the Crimean War from the BBC
Gives a good overview of the battle itself.