Shavuot

"The Torah says that the celebration of the great miracles of Pesach is seven days and the happiness of Succos lasts eight days. Yet for the precious Chag of Shavuos when Hashem gave us the greatest gift of all, the gift that preceded the universe and is the basis of the world, we only have a Yom Tov of one day. Why is this?
Rav Yonah Metzger answers with the Mishna in Pirkei Avos. The Mishna (2:5) says, "V'Al Toimar K'SheEfneh Eshneh Shema Lo Tipaneh", I will learn when I have time, because maybe you will never have time. Torah learning is the lifeblood of a person. It is not a task that must be taken care of at some point in time. Every moment is a new obligation. One who pushes off his immediate obligation will inevitably continue to push it off forever.
Shavuos is the great day of Kabalas HaTorah. If there would be seven days Yom Tov we'd take it easy on the first day knowing we have a whole Yom Tov ahead of us. With Torah there is no time ahead of us, we must embrace it here and now. Hashem gave us one day, if we accept the Torah on that day, it is with us for the rest of the year. If we miss our chance, Shema Lo Tipaneh, we may not get another opportunity."
http://www.revach.net/avodah/olam-hatorah/Why-Did-The-Torah-Only-Give-One-Day-Of-Shavuos/5083

Here's a story about a young woman faced with the dilemma of delivering her valedictorian address on Shavuot.
Here's a video about a young girl who raised thousands of dollars for a soup kitchen.
And, if you have the time, there's an interesting article at Commentary Magazine by Daniel Gordis.

חג שמח