i.e.
Stands for "that is," & is used in place of "in other words," or "it/that is." It specifies or makes more clear.

i.e. means "that is" or "in other words" like a clarification.
e.g. mean "for example"
good luck remembering that, i still google it each time i want to use it in an essay.

i.e. = that is
e.g. = for example

How I remember..
that "I"s = i.e.
for "E"xample = e.g.

e.g.
Means "for example".
"I love contact sports, e.g., Hockey being the one of the roughest."

Grammar Girl says: From now on, i.e., which starts with i, means “in other words,” and e.g., which starts with e, means “for example.” I = in other words. E= example. basically the same as mylicons answer..

e.g. means example given. it almost spells egg, which is more likely an example than used with i.e. Be weird to say, "I found this round thing outside laid by a chicken, i.e. egg"
Sorry that's all i can think.

I was once told that i.e. means "in essence"