Congratulations!
Hehe, interviewed and hired on the same week! That is exactly what happened to me when I got my current job. It has been 2 months and I still feel good about myself when I think about it. You will probably feel ecstatic for a few months, too. 
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DISCLAIMER: It should be noted that, while I strongly suspect I have Asperger's syndrome, I am not diagnosed. Nevertheless, my score on RAADS-R is 186, which makes me a pretty RAAD guy.
Sorry for this terrible joke, by the way.