There is also the famous discrepancy within Haman's description of what should be done for someone who finds favor in the King's eyes:
וַיֹּאמֶר הָמָן, אֶל-הַמֶּלֶךְ: אִישׁ, אֲשֶׁר הַמֶּלֶךְ חָפֵץ בִּיקָרוֹ. יָבִיאוּ לְבוּשׁ מַלְכוּת, אֲשֶׁר לָבַשׁ-בּוֹ הַמֶּלֶךְ; וְסוּס, אֲשֶׁר רָכַב עָלָיו הַמֶּלֶךְ, וַאֲשֶׁר נִתַּן כֶּתֶר מַלְכוּת, בְּרֹאשׁוֹ. וְנָתוֹן הַלְּבוּשׁ וְהַסּוּס, עַל-יַד-אִישׁ מִשָּׂרֵי הַמֶּלֶךְ הַפַּרְתְּמִים, וְהִלְבִּישׁוּ אֶת-הָאִישׁ, אֲשֶׁר הַמֶּלֶךְ חָפֵץ בִּיקָרוֹ; וְהִרְכִּיבֻהוּ עַל-הַסּוּס, בִּרְחוֹב הָעִיר, וְקָרְאוּ לְפָנָיו, כָּכָה יֵעָשֶׂה לָאִישׁ אֲשֶׁר הַמֶּלֶךְ חָפֵץ בִּיקָרוֹ.
"And Haman said unto the king: 'For the man whom the king delighteth to honour, let royal apparel be brought which the king useth to wear, and the horse that the king rideth upon, and on whose head a crown royal is set; and let the apparel and the horse be delivered to the hand of one of the king's most noble princes, that they may array the man therewith whom the king delighteth to honour, and cause him to ride on horseback through the street of the city, and proclaim before him: Thus shall it be done to the man whom the king delighteth to honour.'"
And A*h*ashverosh's response:
וַיֹּאמֶר הַמֶּלֶךְ לְהָמָן, מַהֵר קַח אֶת-הַלְּבוּשׁ וְאֶת-הַסּוּס כַּאֲשֶׁר דִּבַּרְתָּ, וַעֲשֵׂה-כֵן לְמָרְדֳּכַי הַיְּהוּדִי, הַיּוֹשֵׁב בְּשַׁעַר הַמֶּלֶךְ: אַל-תַּפֵּל דָּבָר, מִכֹּל אֲשֶׁר דִּבַּרְתָּ.
"Then the king said to Haman: 'Make haste, and take the apparel and the horse, as thou hast said, and do even so to Mordecai the Jew, that sitteth at the king's gate; let nothing fail of all that thou hast spoken.'"
In short:
Haman says, "Bring out the King's best clothes, horse and crown ... uh ... and place the clothes on this person and let him ride the horse. Yeah, the clothes and the horse. That's the ticket. Who said anything about a crown?"
And A*h*ashverosh responds by saying, "You do realize I'm talking about Mordechai, don't you? Don't leave out that detail. Let him wear the crown, too."