X-Men 101: #101 - RERUNS

Issues of Uncanny X-Men #67-93 were actually reprints. It was decided at Marvel that the X-Men sold well enough to continue selling the comic, but they couldn't afford to pay for original stories.

X-Men 101: #100 - GODDESS OF THUNDER

Storm once had the power of Thor! At a time when she lost her powers, Loki gave her an Uru hammer and new weather powers to replace the God of Thunder in another of his attempts to rule Asgard.
(Uncanny X-Men Annual #9)

X-Men 101: #99 - UNSTOPPABLE OBJECT

Juggernaut can only be stopped by taking his helmet off, leaving him vulnerable to a mental attack. Otherwise, there is no way to prevent him from walking wherever he pleases!
(Uncanny X-Men #13)

X-Men 101: #98 - MRS. WOLVERINE

Wolverine was almost married to Mariko Yashida. Mastermind's manipulations forced Mariko to call off the wedding. She was later given lethal poison and asked wolverine to put her out of her misery, which he did.
(Uncanny X-Men #172-#173, Wolverine #57)

X-Men 101: #97 - MUTANT X

After a member of Havok's X-Factor team, Greystone, develops temporal insanity, he attempts to build a time machine to return to his timeline and be reunited with his mother. Havok attempts to stop him, but the machine explodes, supposedly killing both men. However, at the instant of his death, another Havok from an alternate reality also dies after being shot in the chest by a Sentinel. Somehow, Havok's spirit finds its way into his counterpart's body and he wakes up in the Mutant X Universe. Here, he is the leader of a mutant team of heroes dubbed The Six, which consists of Bloodstorm (Storm), Brute (Beast), Fallen (Archangel), Ice-Man (Iceman) and the Goblyn Queen (Madelyne Pryor).
The series lasted for 32 issues and three annuals before it ended and Alex Summers' consciousness was returned to his proper body.

X-Men 101: #96 - WOMEN'S WORK

The X-Men's costumes were all standard yellow and blue until Jean Grey took the time to sew them all new, individually designed suits.
(Uncanny X-Men #39)

X-Men 101: #95 - ANGEL'S OUT

Angel's first association with the new X-Men lasted less than a year. He quickly left because he thought Wolverine was a psychopath.
(Uncanny X-Men #139-148)