Since Purim is almost upon us, here are some older Seforim Blog posts dealing with Purim themes (arranged chronologically):
Purim, Mixed Dancing and Kill Joys (3.06.2006); Mahar"i Mintz permitted cross dressing and mixed dancing on Purim. Also discussed are other rabbinic reactions to Purim merrymaking.
Review of Reckless Rites by Elliott Horowitz (4.07.2006). This controversial book subtitled "Purim and the Legacy of Jewish Violence" discusses incidents of Jewish violence toward non-Jews on Purim and the way Jewish historians sometimes downplayed these incidents.
Tussle Over Horowitz's Book (10.11.2006) discusses the resulting fallout of this book, whose thesis was disliked by Hillel Halkin in Commentary.
The Origins of Hamentashen in Jewish Literature: A Historical-Culinary Survey (2.28.2007), a classic post by Eliezer Brodt on this relatively recent Jewish custom.
Judah Wistinetzky and Mishloach Manot to his American friends (3.02.2007); Menachem Butler points out a post by Ari Kinsberg about a sefer distributed as a mishloach manot gift to the author's friends.
Purim and Parodies (3.17.2008) by Eliezer Brodt. Eliezer discusses everything from a humorous Purim piyut included in Mahzor Vitry, to Kalonymus ben Kalonymus's Massekhet Purim to the very rare Sefer Ha-kundas, a 19th century parody of the laws of trouble-making in the style of the Shulhan Aruch.
The Origins of Hamentashen in Jewish Literature: A Historical-Culinary Survey Revisited by Eliezer Brodt (3.18.2008). Eliezer revisits his post, updated with many additions and corrections.
"'Most of all you've got to hide it from the kids…' Reading Esther before Bed" by Elliott Horowitz (2.25.2010). This post discusses bible tales adopted for children in softened form.
The Origin of Ta'anit Esther by Mitchell First (3.3.2011). In this recent post, it is argued that this fast's origin is even later than the original She'iltot (8th century).
Also, here are a few Purim posts from fellow-traveller On the Main Line:
A duel fought with swords on Purim, 1891 a duel fought with swords on Purim, between a Jew and a modern-day Haman.
How Moses Montefiore spent his time on Purim - giving matanot la-evyonim.
1841 Purim in New York, to bang at Haman's name or not to bang?