To Rejoice and be happy on such a day , do special zikr of Allah is a sunnah and was done by Prophet [saw] and sahabas [ra] as well. On other hand taking out of Jalusoos , using TV to give lectures are things present in modern time and weren't done during that time.
Now we will give proofs from Quran ,Hadiths, Early Islam inshallah on this issue
You can check scan pages of schlars quoted from here : http://www.ahlus-sunna.com/index.php...=53&Itemid=118
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On issue of Categories of Bidah [innovations, bidats] in Islam :Every innovation Bidah is not bad from Quran, Sahih hadiths, Sahabas [ra], Salafs, classical scholars and analysis of other school of thoughts as well please check. http://sunniforum.net/showthread.php?t=1181
