And there are more to come:
After Kes being brought back to Voyager in the "Coming Home"-story I mentioned in my previous post, the ship encountered another alien on drift in the Delta Quadrant. This alien could travel in time and had actually been on Earth, but that was in the 20th century. However, the alien had a lot of interesting stories to tell and Janeway and her colleagues liked him so much that they made him a member of the crew.
On this picture
we can see Kes having a nice conversation in the mess hall with the new crew member over a cup of Neelix's coffee.