Do I know this person?

Do you ever see someone who you think you recognise, but you can't place them? This has been happening to me recently a bit, with someone I see each evening as I ride home from work. It's usually on the approach to the Sundale Bridge, or sometimes on the bridge itself. She's usually riding home from work in the other direction (presumably she works at Seaworld judging by the uniform). We usually smile and/or greet each other as we pass, then go on our merry way. I know it usually brightens my day just a little bit. I'm sure I recognise her face from somewhere, but I just can't place it. For the record, I haven't been to Seaworld in 20 years. I have eleven further commutes on this route to figure it out.

Then there is the jogger that I used to see in the mornings everyday on my ride to work. This guy and I have this strange way of waving to each other as we pass, we both seem to do a simultaneous pose as though we're waving to a huge crowd somewhere. It's almost as if it's the final stages of the climb to Alpe D' Huez or the last bit of the Gold Coast Marathon, but in reality we're just waving to each other. Again, I'm sure I know him from somewhere, and he recognises me from somewhere, but I'm buggered if I can figure out where. It seems highly unusual to give such a huge wave to a complete stranger. I hope we cross paths again at some point in the next two and a bit weeks before I change commutes. It promises to be one hell of a wave.