On the eve of the 9th of Av, Rabbi Yehudah used to eat dry, salted bread and drink water while sitting in the run-down section of the house between the ovens, acting as though he had a dead relative before him: Taanit 30a-b
Rabbi Yehudah responding to an explanation by Rabbi Yosi, "May your mind rest, for you set my mind to rest": Menachot 45a
Rabbi Yehudah building a Succah during a time of a governmental decree forbidding it, with a roof of boards: Succah 14b
Rabbi Yehudah taught Torah while in mourning for his son, via a third party [Rabbi Chananyah ben Akavya] who transmitted to his assistant, because he was needed: Moed Katan 21a
Rabbi Yehudah using the phrase, "Chas VeShalom": Pesachim 64b
Saying, "May a curse befall one who feeds his father out of Paupers' Tithe: Kiddushin 32a
Dancing before a Bride with Myrtle Branches: Ketuvot 17a
Testifying how he and his colleagues used to sleep beneath a bed in the Succah, before their Elders: Succah 11a, 20b
Stopped learning Torah to show honor to a passing Bride or Coffin: Megillah 29a; Ketuvot 17a
Rabbi Yehudah is listed sometimes as "Chasid Echad [One pious person]": Temurah 15b-16a; Rashi Shabbat 127b
One pious person raised a goat in Israel because his doctor said he needed the goat's milk; this was his only sin. This person was either Rabbi Yehudah ben Bava or Rabbi Yehuda ben Rabbi Ilai: Temurah 15b-16a
Rabbi Yehudah's use of "Eimatai" or "Bameh" ["When is this true"] in a Mishnah is always meant to explain the preceding view, and not to argue against it: Eruvin 81b-82a
Rabbi Yehudah explaining how they brought a Torah scroll on Shabbat during a time of danger: Eruvin 91a
Involvement with other Sages
Rabbi Yehudah praising Akavyah Ben Mahallel, and saying that there was no way that he was ever ex-communicated: Pesachim 64b
Ulla came to Pumbedita and refused to examine a case of menstrual blood, because Rabbi Elazar had refused to examine a case when in Rabbi Yehudah's town: Niddah 20b
Rabbi Yosi exclaiming to Rabbi Yehudah, "May your mind rest, for you have set my mind to rest!": Yoma 66b
Rabbi Yishmael B"R Yosi requesting from Rabbi Yehudah, "Rebbe, Explain that statement!": Succah 18a [2x]
Rabbi Yehudah learning before Rabbi Tarfon: Kiddushin 14a
Rabbi Yehudah reporting a pedagogic practice which Rabbi Akiva performed when Rabbi Yehudah learned before him: Eruvin 41a
Two Sages arguing about what Rabbi Yehudah actually said [Trei Tannai Aliba deR' Yehudah]: Taanit 4b; Nedarim 11a; Makkot 16a; Zevachim 36a-b
Concluding that one statement of Rabbi Yehudah's, which contradicted another of his statements, was actually a citation from his teacher, Rabbi Yosi haGelili: Makkot 16a
How we decide the law when Rabbi Yehudah and Rabbi Meir disagree: Eruvin 46b-47a, 52a; Ketuvot 60b