And, with that, it is time for me to bid you adios. Nottingham Forest have made it to the fifth round of the FA Cup, while Spain's big two are on course for a cup-final meeting.

We'll be back on Saturday for all the Premier League action, which starts with Liverpool v Arsenal. Don't miss it.

So, at the moment, an El Clasico Copa del Rey final looks on the cards for the second time in four years. Real lead Atletico 3-0 after the first leg, while Barca have a two-goal advantage over Real Sociedad.

In that last Real-Barca final, in 2011, Real won 1-0.

David:, external Once went to a Fenerbahce game where the home fans didn't sit down the whole game and the away fans were in a cage! Best ground.

All over. Barcelona take a 2-0 lead into the second leg of this Copa del Rey semi-final, but should they have had more? Real Sociedad might not be too displeased considering how long they played with 10 men.

Clock ticking down, three minutes added to the 90. Sociedad still defending like Trojans.

Branau or Never:, external Gresty Road, Crewe. Only ground in the country to back directly on to railway tracks. Got to be worth something?

Kieran Taylor:, external What about Braga FC. A steep cliff face for one of its stands.

Given that they have been down to 10 men for so much of this game, would Sociedad actually be quite pleased with this 2-0 scoreline? They'll still be in it for the second leg.

Well inside the final 10 minutes at a rapidly emptying Nou Camp. Somehow, Sociedad got the ball into the Barca half, but on the counter the hosts almost get a third. Lionel Messi is on the stretch for a volley that is beaten away by Enaut Zubikarai then, from the resulting corner, Pedro blazes over.

Chris in Burton: The San Siro, best stadium by far, incredible atmosphere.

There is plenty of room to stretch out at the Nou Camp tonight. 38,505 have made their way in to see tonight's game. That figure would be be more-than-respectable at most venues but for Barcelona that is less than 40% full.

Sociedad are defending on the width of their 18-yard box, forcing Barca wide then snuffing out the cross. The home side swarm like blue and red bees, but there's no further honey.

Image source, Getty Images

Joe in Cardiff: La Bombonera. Nobody who's been would argue.

Sociedad only have nine outfield players on the pitch, and at any one time as many as eight of them are behind the ball. It's like a training game of attack v defence. Still, though, there's no sign of Barca scoring another without the help of a comedy OG.

Ayo Obit:, external That is the funniest own goal I have ever seen! What was Elustondo thinking?

Image source, Reuters

I think that might be the best own goal I've ever seen. Even better than when Lee Dixon lobbed his own goalkeeper David Seaman from 30 yards., external

Image source, Getty Images

Stewie Wright-Taylor:, external Forsyth Barr Stadium in Dunedin, New Zealand is an exceptional arena - both inside and out.

Graham Jack Thirkill:, external Nou Camp? Nah. Oliver's Mount in Scarborough. Football pitches above a busy town. Bit windy mind...

Zubikarai has every right to be livid with his team-mate. As we have discussed, the Nou Camp is huge, massive, enormous. Elustondo could have put his boot through that ball and sent it anywhere. Row Z, the dressing room, that little chapel beside the tunnel. Instead, he found the bloke closest to him, and cost the keeper an own goal that will go viral.

The thing about that goal was that, had Sanchez not hit the post, we would have being saying what a wonderful move it was by Barca. Cesc Fabregas split the defence with a through ball, Sanchez got through the offside trap and should have scored. In the end, he needed the Elustondo-Zubikarai circus.

This is one of the greatest own goals that you will ever see. Alexis Sanchez is through on goal, sliding the ball past goalkeeper Enaut Zubikarai, but sees the ball come back off the post. Gorka Elustondo is there to get the loose ball, but wellies it straight at Zubikarai, with ball rebounding into the net. Absolute comedy.

David: The Nou Camp might have all those things but Griffin Park still has a pub at all four corners of the ground.