Do Not Go Gentle Into That Good Night

I was watching some WETA (PBS) and they had that guy from 3rd Rock from the Sun... what's his name? JOHN LITHGOW!  Hah!  I remembered!

Anyway, he read a poem by Dylan Thomas called, "Do Not Go Gentle Into That Good Night"

        Do not go gentle into that good night,

        Old age should burn and rave at close of day;

        Rage, rage against the dying of the light.

        Though wise men at their end know dark is right,

        Because their words had forked no lightning they

        Do not go gentle into that good night.

        Good men, the last wave by, crying how bright

        Their frail deeds might have danced in a green bay,

        Rage, rage against the dying of the light.

        Wild men who caught and sang the sun in flight,

        And learn, too late, they grieved it on its way,

        Do not go gentle into that good night.

        Grave men, near death, who see with blinding sight

        Blind eyes could blaze like meteors and be gay,

        Rage, rage against the dying of the light.

        And you, my father, there on the sad height,

        Curse, bless me now with your fierce tears, I pray.

        Do not go gentle into that good night.

        Rage, rage against the dying of the light. 

I don't know why, but I really like this poem.  Please, if it's something completely off tell me, I'm not always the best at deciphering what's going on but the first glance context I get from it should be right on. 

What do you think?