Your memory must work like Lukas' then.
"1 - Age of the Republic. ANH: "A thousand generations" vs. AOTC: "a thousand years"
2 - AOTC/ROTS: All stormtroopers are clones of Jango Fett. OT: they have different heights and different voices... none of them sound like Temura Morrison.
3 - Size of the Clone Army. AOTC: States 1.2 million "units." By the OT, how can there be enough Stormtroopers to patrol the Galaxy if it takes 10 years to grow them and they age at 2x the normal rate?
4 - How can Leia remember her real mother (ROTJ), if not only was she born AFTER her twin Luke (ROTS), but Padme died in childbirth?
5 - When did Obi-Wan Kenobi serve Bail Organa during the Clone Wars? (ANH)
6 - Design of the Tantive IV (name not stated in movie, but Captain Antilles's ship), how does it change so radically in 20 years? (ROTS vs. ANH)
7 - Why doesn't R2D2 remember the past 20 years?
8 - Why did Ben Kenobi forget about Leia (ESB vs. ROTS)?
9 - When did Anakin demonstrate that he was "already a great pilot" when Obi-Wan "first knew him"? (ROTJ vs. TPM)
10 - When did Owen show any disagreement with Anakin, to the extent described by Obi-Wan? (ANH vs. AOTC/ROTS)
11 - Why does Yoda say that Jedi never use the Force for attack, but only 'knowledge and defense', and why does he disparage war/warriors? (ESB vs. AOTC/ROTS)
12 - Why was Luke "hidden" on Anakin's home planet, at the homestead of the family his mother married into and his last name not changed? (ROTS vs. ANH)
13 - Why doesn't Chewie react to Han Solo's bad-mouthing of the Jedi and the Force? (ANH vs. ROTS)
14 - Why doesn't R2D2 ever use his rocket boosters again? (AOTC/ROTS)
15 - Why did the first Death Star take twenty years to build, while the second, larger and more powerful station, was built in 1-3 years? (ROTS vs. ROTJ)
16 - When was it shown that Anakin was a "good man" and a "good friend" before he turned to the Dark Side? (ROTS vs. ANH/ROTJ)
17 - Why did Obi-Wan refer to Yoda as "The Jedi Master who instructed me" when he was instructed by Qui Gon Jinn? (TPM vs. ESB)
18 - Why does Yoda moan about Luke being "too old to begin the training" when Obi-Wan had no problem with it, and supposedly Yoda thought 9 year old Anakin was "too old"? (TPM vs. ANH/ESB)
19 - What happened to Jar Jar Binks?
20 - (Special Editions) Why does anyone on Tatooine care when the Empire falls?
21 - Why does Obi-Wan wear his Jedi uniform "in hiding" on Tatooine? (ANH vs. TPM/AOTC/ROTS)
22 - What happened to all the battle droids?
23 - Why isn't Luke able to stop the Emperor's lightning attack and why doesn't Yoda at least show him how to counter it? (ROTJ vs. AOTC/ROTS)
24 - If there are only always ever two Sith "no more, no less... a master and an apprentice" (TPM) why does Vader recommend that Luke could be turned into a "powerful ally" and the Emperor agrees he would be a "great asset"? (TPM vs. ESB)
25 - Why do Obi-Wan, Anakin, Owen and Beru appear so old if only 18-20 years have past since we last saw them? (ANH/ROTJ vs. ROTS)
26 - Why doesn't Admiral Motti seem aware of the reality of the Force and the power of those who wield it? (PT vs. ANH)
27 - What happened to the Imperial military in those two decades that they lost nearly all their hardware and technology? (ROTS vs. OT)
28 - Why doesn't Obi-Wan recognize the droids? (ANH vs. PT)
29 - Why doesn't Owen Lars recognize the droids? (ANH vs. AOTC)
30 - Why don't Luke or Leia ever find out that R2D2 knows everything about their past?
31 - Why doesn't Qui Gon Jinn appear as a spirit at the end of ROTJ? (see AOTC/ROTS)
32 - If one has to be "trained" to become a spirit after death, when did Anakin ever learn it? (ROTS vs. ROTJ)
33 - When did Anakin express the desire for his son to have his lightsaber when he was "old enough" (and if the Jedi are trained from birth, does that mean as a toddler? but since the Jedi aren't allowed to have children... then what?)?
34 - How many Wars were there? Why does Yoda refer to it as "the Clone War" instead of the "Clone WarS" (plural)? (AOTC vs. ANH)
35 - Why does Ben refer to Vader as "Darth" if that is a Sith title rather than a personal name? (see ANH)
36 - Was Vader really "but the learner" when he "left" Obi-Wan? (ANH vs. ROTS)
37 - Did Obi-Wan really stop going by that name (and start going by the name "Ben") "before" Luke was born? (ANH vs. ROTS)"
Source:
http://www.chefelf.com/forums/index.php?showtopic=6454