Other similar events or accidents are generally admissible in civil actions to show the occurrence of an event or accident that is in issue at the trial.

United States v. Turning Bear, 357 F.3d 730, 733-734 (8th Cir. 2004) (conviction for aggravated sexual abuse of his son and daughter; accused challenged the trial court's exclusion of testimony from a foster care parent who saw the son on a daily basis for four to six months, and that in her opinion, the...Reputation or opinion is admissible to impeach a witness by showing the untruthfulness of the witness.

Cf. United States v. Murray, 474 F.3d 938, 939-940 (7th Cir. 2007) (although Judge Posner, speaking of behalf of the Court of Appeals, ultimately concludes that the exculptaroy evidence of criminal acts by nonparty was not admissible -- because the nonparty's criminal acts were insufficiently...The prohibition against circumstantial character evidence -- the prohibition, codified in Federal Rule of Evidence 404, against the use of a person's character to show that person's conduct -- does not apply to non-parties.

Fed. R. Evid. 413 ("In a criminal case in which the defendant is accused of an offense of sexual assault, evidence of the defendant's commission of another offense or offenses of sexual assault is admissible, and may be considered for its bearing on any matter to which it is relevant.").Federal Rule of Evidence 413 and comparable rules in a few States create an express exception to the prohibition against circumstantial use of character, the prohibition against the use of character to show conduct. Rules such as Rule 413 provide that in a criminal trial for sexual assault evidence of the defendant's commission of another offense or offenses of sexual assault is admissible.