Actor Allusion: During a conversation with Dutch, Tali pauses before noting he "reminds her of someone." Assuming she's referring to Kal'Reegar, it's worth noting both Kal and Dutch are voiced by Adam Baldwin.
Name's the Same: In addition to Jacob Taylor, one of the Marines is named Sergeant Taylor.
Grunt (the Tank-bred Krogan on Shepard's team) and Grunts (the cannon-fodder Covenant units, also known as Unggoy). The former is not pleased that the two share a name.