Unsurprisingly, there are other individuals named "Eric Cheng" out there in the world.
Strangely enough, while I have never met any in person, I have been mistaken for the following:
Eric Cheng (a.k.a. "the photographer"): perhaps the most "famous" in the list (I mean, he does have his own Wikipedia page).
This case of mistaken identity was a result of our shared (non-overlapping) Stanford affiliation.
Eric Cheng (a.k.a. "the Australian"): I have pieced together that his email address contains one additional letter as compared to mine.
I do delete and notify the original senders (with varying degrees of success and confusion from the sending party).
Eric Cheng (a.k.a. "the employee"): a short-lived staff member at Stanford who shares my name.
He also holds the distinction of being the only "Eric Cheng," to my knowledge, that was mistakenly contacted by someone intending to reach me.
"Eric" Cheng (a.k.a. "the preferred name"): we were both assigned corporate emails corresponding to our given names (which differ).
However, he uses his English name (which we share), resulting in occasional confusion.
Eric Chang (a.k.a. "the misspelling"): not technically a case of mistaken identity, but this misspelling happens often and can be inconvenient.
Oddly enough, while at CMU and Stanford, I actually overlapped with individuals bearing this name.