Megilla 11a says "Three ruled over the world - Achav, Achashverosh and Nebuchadnetzar." It suggests a few other names that weren't on the list and rejects them because they didn't rule over one ...
The Mishnah in Megillah (2:2) says that one who reads the megillah while semi-asleep ('מתנמנם') is yotzei. The gemara comments(18b): מתנמנם יצא וכו': היכי דמי מתנמנם אמר רב אשי נים ולא נים תיר ...
In מגילה דף יב (Megillah 12a-b) it gives two reasons as to why Vashti did not go to Achashveirosh when he requested her to the party. The first reason is that Vashti had Tzarat (a metaphysical skin ...
Tosfos in Megilah (13b, s.v. הַכֶּסֶף נָתוּן לָךְ ) expound the pasuk in Esther (3:11) וַיֹּאמֶר הַמֶּלֶךְ לְהָמָן, הַכֶּסֶף נָתוּן לָךְ; וְהָעָם, לַעֲשׂוֹת בּוֹ כַּטּוֹב בְּעֵינֶיךָ - And the ...